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FFMPEG, preference, dialog

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- [Preference] "Appearance" renamed to "Interface". Rearrange and remove preference to match its category.
- [Dialog] Fix crash when opening color selector.
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Tanasart 2023-10-31 19:33:36 +07:00
parent 8bbec3933c
commit eb977680b9
71 changed files with 253301 additions and 455 deletions
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3
PixelComposer.resource_order
View file

@ -751,7 +751,7 @@
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{"name":"sh_combine_hsv","order":10,"path":"shaders/sh_combine_hsv/sh_combine_hsv.yy",}, {"name":"sh_combine_hsv","order":10,"path":"shaders/sh_combine_hsv/sh_combine_hsv.yy",},
{"name":"s_node_array_insert","order":4,"path":"sprites/s_node_array_insert/s_node_array_insert.yy",}, {"name":"s_node_array_insert","order":4,"path":"sprites/s_node_array_insert/s_node_array_insert.yy",},
{"name":"addon_lua","order":1,"path":"scripts/addon_lua/addon_lua.yy",}, {"name":"addon_lua_widget","order":1,"path":"scripts/addon_lua_widget/addon_lua_widget.yy",},
{"name":"nodeValue_drawer","order":1,"path":"scripts/nodeValue_drawer/nodeValue_drawer.yy",}, {"name":"nodeValue_drawer","order":1,"path":"scripts/nodeValue_drawer/nodeValue_drawer.yy",},
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{"name":"mtl_reader","order":6,"path":"scripts/mtl_reader/mtl_reader.yy",}, {"name":"mtl_reader","order":6,"path":"scripts/mtl_reader/mtl_reader.yy",},
@ -1092,6 +1092,7 @@
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{"name":"s_node_feedback_input","order":10,"path":"sprites/s_node_feedback_input/s_node_feedback_input.yy",}, {"name":"s_node_feedback_input","order":10,"path":"sprites/s_node_feedback_input/s_node_feedback_input.yy",},
{"name":"s_node_path_builder","order":9,"path":"sprites/s_node_path_builder/s_node_path_builder.yy",}, {"name":"s_node_path_builder","order":9,"path":"sprites/s_node_path_builder/s_node_path_builder.yy",},
{"name":"addon_lua_function","order":6,"path":"scripts/addon_lua_function/addon_lua_function.yy",},
{"name":"s_node_noise","order":8,"path":"sprites/s_node_noise/s_node_noise.yy",}, {"name":"s_node_noise","order":8,"path":"sprites/s_node_noise/s_node_noise.yy",},
{"name":"s_node_pb_box_transform","order":19,"path":"sprites/s_node_pb_box_transform/s_node_pb_box_transform.yy",}, {"name":"s_node_pb_box_transform","order":19,"path":"sprites/s_node_pb_box_transform/s_node_pb_box_transform.yy",},
{"name":"node_string_path_separate_folder","order":12,"path":"scripts/node_string_path_separate_folder/node_string_path_separate_folder.yy",}, {"name":"node_string_path_separate_folder","order":12,"path":"scripts/node_string_path_separate_folder/node_string_path_separate_folder.yy",},

47
PixelComposer.yyp
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@ -683,6 +683,50 @@
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{"resourceType":"GMIncludedFile","resourceVersion":"1.0","name":"values.json","CopyToMask":-1,"filePath":"datafiles/data/themes/default",}, {"resourceType":"GMIncludedFile","resourceVersion":"1.0","name":"values.json","CopyToMask":-1,"filePath":"datafiles/data/themes/default",},
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{"resourceType":"GMIncludedFile","resourceVersion":"1.0","name":"ffmpeg.exe","CopyToMask":-1,"filePath":"datafiles/ffmpeg/bin",},
{"resourceType":"GMIncludedFile","resourceVersion":"1.0","name":"ffplay.exe","CopyToMask":-1,"filePath":"datafiles/ffmpeg/bin",},
{"resourceType":"GMIncludedFile","resourceVersion":"1.0","name":"ffprobe.exe","CopyToMask":-1,"filePath":"datafiles/ffmpeg/bin",},
{"resourceType":"GMIncludedFile","resourceVersion":"1.0","name":"bootstrap.min.css","CopyToMask":-1,"filePath":"datafiles/ffmpeg/doc",},
{"resourceType":"GMIncludedFile","resourceVersion":"1.0","name":"community.html","CopyToMask":-1,"filePath":"datafiles/ffmpeg/doc",},
{"resourceType":"GMIncludedFile","resourceVersion":"1.0","name":"default.css","CopyToMask":-1,"filePath":"datafiles/ffmpeg/doc",},
{"resourceType":"GMIncludedFile","resourceVersion":"1.0","name":"developer.html","CopyToMask":-1,"filePath":"datafiles/ffmpeg/doc",},
{"resourceType":"GMIncludedFile","resourceVersion":"1.0","name":"faq.html","CopyToMask":-1,"filePath":"datafiles/ffmpeg/doc",},
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{"resourceType":"GMIncludedFile","resourceVersion":"1.0","name":"ffmpeg-all.html","CopyToMask":-1,"filePath":"datafiles/ffmpeg/doc",},
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{"resourceType":"GMIncludedFile","resourceVersion":"1.0","name":"ffmpeg-codecs.html","CopyToMask":-1,"filePath":"datafiles/ffmpeg/doc",},
{"resourceType":"GMIncludedFile","resourceVersion":"1.0","name":"ffmpeg-devices.html","CopyToMask":-1,"filePath":"datafiles/ffmpeg/doc",},
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{"resourceType":"GMIncludedFile","resourceVersion":"1.0","name":"ffmpeg-formats.html","CopyToMask":-1,"filePath":"datafiles/ffmpeg/doc",},
{"resourceType":"GMIncludedFile","resourceVersion":"1.0","name":"ffmpeg-protocols.html","CopyToMask":-1,"filePath":"datafiles/ffmpeg/doc",},
{"resourceType":"GMIncludedFile","resourceVersion":"1.0","name":"ffmpeg-resampler.html","CopyToMask":-1,"filePath":"datafiles/ffmpeg/doc",},
{"resourceType":"GMIncludedFile","resourceVersion":"1.0","name":"ffmpeg-scaler.html","CopyToMask":-1,"filePath":"datafiles/ffmpeg/doc",},
{"resourceType":"GMIncludedFile","resourceVersion":"1.0","name":"ffmpeg-utils.html","CopyToMask":-1,"filePath":"datafiles/ffmpeg/doc",},
{"resourceType":"GMIncludedFile","resourceVersion":"1.0","name":"ffmpeg.html","CopyToMask":-1,"filePath":"datafiles/ffmpeg/doc",},
{"resourceType":"GMIncludedFile","resourceVersion":"1.0","name":"ffplay-all.html","CopyToMask":-1,"filePath":"datafiles/ffmpeg/doc",},
{"resourceType":"GMIncludedFile","resourceVersion":"1.0","name":"ffplay.html","CopyToMask":-1,"filePath":"datafiles/ffmpeg/doc",},
{"resourceType":"GMIncludedFile","resourceVersion":"1.0","name":"ffprobe-all.html","CopyToMask":-1,"filePath":"datafiles/ffmpeg/doc",},
{"resourceType":"GMIncludedFile","resourceVersion":"1.0","name":"ffprobe.html","CopyToMask":-1,"filePath":"datafiles/ffmpeg/doc",},
{"resourceType":"GMIncludedFile","resourceVersion":"1.0","name":"general.html","CopyToMask":-1,"filePath":"datafiles/ffmpeg/doc",},
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{"resourceType":"GMIncludedFile","resourceVersion":"1.0","name":"libavcodec.html","CopyToMask":-1,"filePath":"datafiles/ffmpeg/doc",},
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@ -1382,7 +1426,7 @@
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{"id":{"name":"s_node_array_insert","path":"sprites/s_node_array_insert/s_node_array_insert.yy",},}, {"id":{"name":"s_node_array_insert","path":"sprites/s_node_array_insert/s_node_array_insert.yy",},},
{"id":{"name":"addon_lua","path":"scripts/addon_lua/addon_lua.yy",},}, {"id":{"name":"addon_lua_widget","path":"scripts/addon_lua_widget/addon_lua_widget.yy",},},
{"id":{"name":"nodeValue_drawer","path":"scripts/nodeValue_drawer/nodeValue_drawer.yy",},}, {"id":{"name":"nodeValue_drawer","path":"scripts/nodeValue_drawer/nodeValue_drawer.yy",},},
{"id":{"name":"node_noise","path":"scripts/node_noise/node_noise.yy",},}, {"id":{"name":"node_noise","path":"scripts/node_noise/node_noise.yy",},},
{"id":{"name":"s_node_pb_draw_semi_ellipse","path":"sprites/s_node_pb_draw_semi_ellipse/s_node_pb_draw_semi_ellipse.yy",},}, {"id":{"name":"s_node_pb_draw_semi_ellipse","path":"sprites/s_node_pb_draw_semi_ellipse/s_node_pb_draw_semi_ellipse.yy",},},
@ -1765,6 +1809,7 @@
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{"id":{"name":"s_node_feedback_input","path":"sprites/s_node_feedback_input/s_node_feedback_input.yy",},}, {"id":{"name":"s_node_feedback_input","path":"sprites/s_node_feedback_input/s_node_feedback_input.yy",},},
{"id":{"name":"s_node_path_builder","path":"sprites/s_node_path_builder/s_node_path_builder.yy",},}, {"id":{"name":"s_node_path_builder","path":"sprites/s_node_path_builder/s_node_path_builder.yy",},},
{"id":{"name":"addon_lua_function","path":"scripts/addon_lua_function/addon_lua_function.yy",},},
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674
datafiles/ffmpeg/LICENSE Normal file
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@ -0,0 +1,674 @@
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FFmpeg 64-bit static Windows build from www.gyan.dev
Version: 2023-10-29-git-2532e832d2-essentials_build-www.gyan.dev
License: GPL v3
Source Code: https://github.com/FFmpeg/FFmpeg/commit/2532e832d2
git-essentials build configuration:
ARCH x86 (generic)
big-endian no
runtime cpu detection yes
standalone assembly yes
x86 assembler nasm
MMX enabled yes
MMXEXT enabled yes
3DNow! enabled yes
3DNow! extended enabled yes
SSE enabled yes
SSSE3 enabled yes
AESNI enabled yes
AVX enabled yes
AVX2 enabled yes
AVX-512 enabled yes
AVX-512ICL enabled yes
XOP enabled yes
FMA3 enabled yes
FMA4 enabled yes
i686 features enabled yes
CMOV is fast yes
EBX available yes
EBP available yes
debug symbols yes
strip symbols yes
optimize for size no
optimizations yes
static yes
shared no
postprocessing support yes
network support yes
threading support pthreads
safe bitstream reader yes
texi2html enabled no
perl enabled yes
pod2man enabled yes
makeinfo enabled yes
makeinfo supports HTML yes
xmllint enabled yes
External libraries:
avisynth libopencore_amrnb libvpx
bzlib libopencore_amrwb libwebp
gmp libopenjpeg libx264
gnutls libopenmpt libx265
iconv libopus libxml2
libaom librubberband libxvid
libass libspeex libzimg
libfontconfig libsrt libzmq
libfreetype libssh lzma
libfribidi libtheora mediafoundation
libgme libvidstab sdl2
libgsm libvmaf zlib
libharfbuzz libvo_amrwbenc
libmp3lame libvorbis
External libraries providing hardware acceleration:
amf d3d11va libvpl
cuda dxva2 nvdec
cuda_llvm ffnvcodec nvenc
cuvid libmfx
Libraries:
avcodec avformat swresample
avdevice avutil swscale
avfilter postproc
Programs:
ffmpeg ffplay ffprobe
Enabled decoders:
aac fmvc pdv
aac_fixed fourxm pfm
aac_latm fraps pgm
aasc frwu pgmyuv
ac3 ftr pgssub
ac3_fixed g2m pgx
acelp_kelvin g723_1 phm
adpcm_4xm g729 photocd
adpcm_adx gdv pictor
adpcm_afc gem pixlet
adpcm_agm gif pjs
adpcm_aica gremlin_dpcm png
adpcm_argo gsm ppm
adpcm_ct gsm_ms prores
adpcm_dtk h261 prosumer
adpcm_ea h263 psd
adpcm_ea_maxis_xa h263i ptx
adpcm_ea_r1 h263p qcelp
adpcm_ea_r2 h264 qdm2
adpcm_ea_r3 h264_cuvid qdmc
adpcm_ea_xas h264_qsv qdraw
adpcm_g722 hap qoi
adpcm_g726 hca qpeg
adpcm_g726le hcom qtrle
adpcm_ima_acorn hdr r10k
adpcm_ima_alp hevc r210
adpcm_ima_amv hevc_cuvid ra_144
adpcm_ima_apc hevc_qsv ra_288
adpcm_ima_apm hnm4_video ralf
adpcm_ima_cunning hq_hqa rasc
adpcm_ima_dat4 hqx rawvideo
adpcm_ima_dk3 huffyuv realtext
adpcm_ima_dk4 hymt rka
adpcm_ima_ea_eacs iac rl2
adpcm_ima_ea_sead idcin roq
adpcm_ima_iss idf roq_dpcm
adpcm_ima_moflex iff_ilbm rpza
adpcm_ima_mtf ilbc rscc
adpcm_ima_oki imc rtv1
adpcm_ima_qt imm4 rv10
adpcm_ima_rad imm5 rv20
adpcm_ima_smjpeg indeo2 rv30
adpcm_ima_ssi indeo3 rv40
adpcm_ima_wav indeo4 s302m
adpcm_ima_ws indeo5 sami
adpcm_ms interplay_acm sanm
adpcm_mtaf interplay_dpcm sbc
adpcm_psx interplay_video scpr
adpcm_sbpro_2 ipu screenpresso
adpcm_sbpro_3 jacosub sdx2_dpcm
adpcm_sbpro_4 jpeg2000 sga
adpcm_swf jpegls sgi
adpcm_thp jv sgirle
adpcm_thp_le kgv1 sheervideo
adpcm_vima kmvc shorten
adpcm_xa lagarith simbiosis_imx
adpcm_xmd libaom_av1 sipr
adpcm_yamaha libgsm siren
adpcm_zork libgsm_ms smackaud
agm libopencore_amrnb smacker
aic libopencore_amrwb smc
alac libopus smvjpeg
alias_pix libspeex snow
als libvorbis sol_dpcm
amrnb libvpx_vp8 sonic
amrwb libvpx_vp9 sp5x
amv loco speedhq
anm lscr speex
ansi m101 srgc
anull mace3 srt
apac mace6 ssa
ape magicyuv stl
apng mdec subrip
aptx media100 subviewer
aptx_hd metasound subviewer1
arbc microdvd sunrast
argo mimic svq1
ass misc4 svq3
asv1 mjpeg tak
asv2 mjpeg_cuvid targa
atrac1 mjpeg_qsv targa_y216
atrac3 mjpegb tdsc
atrac3al mlp text
atrac3p mmvideo theora
atrac3pal mobiclip thp
atrac9 motionpixels tiertexseqvideo
aura movtext tiff
aura2 mp1 tmv
av1 mp1float truehd
av1_cuvid mp2 truemotion1
av1_qsv mp2float truemotion2
avrn mp3 truemotion2rt
avrp mp3adu truespeech
avs mp3adufloat tscc
avui mp3float tscc2
ayuv mp3on4 tta
bethsoftvid mp3on4float twinvq
bfi mpc7 txd
bink mpc8 ulti
binkaudio_dct mpeg1_cuvid utvideo
binkaudio_rdft mpeg1video v210
bintext mpeg2_cuvid v210x
bitpacked mpeg2_qsv v308
bmp mpeg2video v408
bmv_audio mpeg4 v410
bmv_video mpeg4_cuvid vb
bonk mpegvideo vble
brender_pix mpl2 vbn
c93 msa1 vc1
cavs mscc vc1_cuvid
cbd2_dpcm msmpeg4v1 vc1_qsv
ccaption msmpeg4v2 vc1image
cdgraphics msmpeg4v3 vcr1
cdtoons msnsiren vmdaudio
cdxl msp2 vmdvideo
cfhd msrle vmix
cinepak mss1 vmnc
clearvideo mss2 vnull
cljr msvideo1 vorbis
cllc mszh vp3
comfortnoise mts2 vp4
cook mv30 vp5
cpia mvc1 vp6
cri mvc2 vp6a
cscd mvdv vp6f
cyuv mvha vp7
dca mwsc vp8
dds mxpeg vp8_cuvid
derf_dpcm nellymoser vp8_qsv
dfa notchlc vp9
dfpwm nuv vp9_cuvid
dirac on2avc vp9_qsv
dnxhd opus vplayer
dolby_e osq vqa
dpx paf_audio vqc
dsd_lsbf paf_video wady_dpcm
dsd_lsbf_planar pam wavarc
dsd_msbf pbm wavpack
dsd_msbf_planar pcm_alaw wbmp
dsicinaudio pcm_bluray wcmv
dsicinvideo pcm_dvd webp
dss_sp pcm_f16le webvtt
dst pcm_f24le wmalossless
dvaudio pcm_f32be wmapro
dvbsub pcm_f32le wmav1
dvdsub pcm_f64be wmav2
dvvideo pcm_f64le wmavoice
dxa pcm_lxf wmv1
dxtory pcm_mulaw wmv2
dxv pcm_s16be wmv3
eac3 pcm_s16be_planar wmv3image
eacmv pcm_s16le wnv1
eamad pcm_s16le_planar wrapped_avframe
eatgq pcm_s24be ws_snd1
eatgv pcm_s24daud xan_dpcm
eatqi pcm_s24le xan_wc3
eightbps pcm_s24le_planar xan_wc4
eightsvx_exp pcm_s32be xbin
eightsvx_fib pcm_s32le xbm
escape124 pcm_s32le_planar xface
escape130 pcm_s64be xl
evrc pcm_s64le xma1
exr pcm_s8 xma2
fastaudio pcm_s8_planar xpm
ffv1 pcm_sga xsub
ffvhuff pcm_u16be xwd
ffwavesynth pcm_u16le y41p
fic pcm_u24be ylc
fits pcm_u24le yop
flac pcm_u32be yuv4
flashsv pcm_u32le zero12v
flashsv2 pcm_u8 zerocodec
flic pcm_vidc zlib
flv pcx zmbv
Enabled encoders:
a64multi hevc_nvenc pcm_u32be
a64multi5 hevc_qsv pcm_u32le
aac huffyuv pcm_u8
aac_mf jpeg2000 pcm_vidc
ac3 jpegls pcx
ac3_fixed libaom_av1 pfm
ac3_mf libgsm pgm
adpcm_adx libgsm_ms pgmyuv
adpcm_argo libmp3lame phm
adpcm_g722 libopencore_amrnb png
adpcm_g726 libopenjpeg ppm
adpcm_g726le libopus prores
adpcm_ima_alp libspeex prores_aw
adpcm_ima_amv libtheora prores_ks
adpcm_ima_apm libvo_amrwbenc qoi
adpcm_ima_qt libvorbis qtrle
adpcm_ima_ssi libvpx_vp8 r10k
adpcm_ima_wav libvpx_vp9 r210
adpcm_ima_ws libwebp ra_144
adpcm_ms libwebp_anim rawvideo
adpcm_swf libx264 roq
adpcm_yamaha libx264rgb roq_dpcm
alac libx265 rpza
alias_pix libxvid rv10
amv ljpeg rv20
anull magicyuv s302m
apng mjpeg sbc
aptx mjpeg_qsv sgi
aptx_hd mlp smc
ass movtext snow
asv1 mp2 sonic
asv2 mp2fixed sonic_ls
av1_amf mp3_mf speedhq
av1_nvenc mpeg1video srt
av1_qsv mpeg2_qsv ssa
avrp mpeg2video subrip
avui mpeg4 sunrast
ayuv msmpeg4v2 svq1
bitpacked msmpeg4v3 targa
bmp msrle text
cfhd msvideo1 tiff
cinepak nellymoser truehd
cljr opus tta
comfortnoise pam ttml
dca pbm utvideo
dfpwm pcm_alaw v210
dnxhd pcm_bluray v308
dpx pcm_dvd v408
dvbsub pcm_f32be v410
dvdsub pcm_f32le vbn
dvvideo pcm_f64be vc2
eac3 pcm_f64le vnull
exr pcm_mulaw vorbis
ffv1 pcm_s16be vp9_qsv
ffvhuff pcm_s16be_planar wavpack
fits pcm_s16le wbmp
flac pcm_s16le_planar webvtt
flashsv pcm_s24be wmav1
flashsv2 pcm_s24daud wmav2
flv pcm_s24le wmv1
g723_1 pcm_s24le_planar wmv2
gif pcm_s32be wrapped_avframe
h261 pcm_s32le xbm
h263 pcm_s32le_planar xface
h263p pcm_s64be xsub
h264_amf pcm_s64le xwd
h264_mf pcm_s8 y41p
h264_nvenc pcm_s8_planar yuv4
h264_qsv pcm_u16be zlib
hdr pcm_u16le zmbv
hevc_amf pcm_u24be
hevc_mf pcm_u24le
Enabled hwaccels:
av1_d3d11va hevc_nvdec vc1_nvdec
av1_d3d11va2 mjpeg_nvdec vp8_nvdec
av1_dxva2 mpeg1_nvdec vp9_d3d11va
av1_nvdec mpeg2_d3d11va vp9_d3d11va2
h264_d3d11va mpeg2_d3d11va2 vp9_dxva2
h264_d3d11va2 mpeg2_dxva2 vp9_nvdec
h264_dxva2 mpeg2_nvdec wmv3_d3d11va
h264_nvdec mpeg4_nvdec wmv3_d3d11va2
hevc_d3d11va vc1_d3d11va wmv3_dxva2
hevc_d3d11va2 vc1_d3d11va2 wmv3_nvdec
hevc_dxva2 vc1_dxva2
Enabled parsers:
aac dvdsub mpegaudio
aac_latm evc mpegvideo
ac3 flac opus
adx ftr png
amr g723_1 pnm
av1 g729 qoi
avs2 gif rv34
avs3 gsm sbc
bmp h261 sipr
cavsvideo h263 tak
cook h264 vc1
cri hdr vorbis
dca hevc vp3
dirac ipu vp8
dnxhd jpeg2000 vp9
dolby_e jpegxl vvc
dpx misc4 webp
dvaudio mjpeg xbm
dvbsub mlp xma
dvd_nav mpeg4video xwd
Enabled demuxers:
aa idf pcm_mulaw
aac iff pcm_s16be
aax ifv pcm_s16le
ac3 ilbc pcm_s24be
ac4 image2 pcm_s24le
ace image2_alias_pix pcm_s32be
acm image2_brender_pix pcm_s32le
act image2pipe pcm_s8
adf image_bmp_pipe pcm_u16be
adp image_cri_pipe pcm_u16le
ads image_dds_pipe pcm_u24be
adx image_dpx_pipe pcm_u24le
aea image_exr_pipe pcm_u32be
afc image_gem_pipe pcm_u32le
aiff image_gif_pipe pcm_u8
aix image_hdr_pipe pcm_vidc
alp image_j2k_pipe pdv
amr image_jpeg_pipe pjs
amrnb image_jpegls_pipe pmp
amrwb image_jpegxl_pipe pp_bnk
anm image_pam_pipe pva
apac image_pbm_pipe pvf
apc image_pcx_pipe qcp
ape image_pfm_pipe r3d
apm image_pgm_pipe rawvideo
apng image_pgmyuv_pipe realtext
aptx image_pgx_pipe redspark
aptx_hd image_phm_pipe rka
aqtitle image_photocd_pipe rl2
argo_asf image_pictor_pipe rm
argo_brp image_png_pipe roq
argo_cvg image_ppm_pipe rpl
asf image_psd_pipe rsd
asf_o image_qdraw_pipe rso
ass image_qoi_pipe rtp
ast image_sgi_pipe rtsp
au image_sunrast_pipe s337m
av1 image_svg_pipe sami
avi image_tiff_pipe sap
avisynth image_vbn_pipe sbc
avr image_webp_pipe sbg
avs image_xbm_pipe scc
avs2 image_xpm_pipe scd
avs3 image_xwd_pipe sdns
bethsoftvid imf sdp
bfi ingenient sdr2
bfstm ipmovie sds
bink ipu sdx
binka ircam segafilm
bintext iss ser
bit iv8 sga
bitpacked ivf shorten
bmv ivr siff
boa jacosub simbiosis_imx
bonk jpegxl_anim sln
brstm jv smacker
c93 kux smjpeg
caf kvag smush
cavsvideo laf sol
cdg libgme sox
cdxl libopenmpt spdif
cine live_flv srt
codec2 lmlm4 stl
codec2raw loas str
concat lrc subviewer
dash luodat subviewer1
data lvf sup
daud lxf svag
dcstr m4v svs
derf matroska swf
dfa mca tak
dfpwm mcc tedcaptions
dhav mgsts thp
dirac microdvd threedostr
dnxhd mjpeg tiertexseq
dsf mjpeg_2000 tmv
dsicin mlp truehd
dss mlv tta
dts mm tty
dtshd mmf txd
dv mods ty
dvbsub moflex usm
dvbtxt mov v210
dxa mp3 v210x
ea mpc vag
ea_cdata mpc8 vc1
eac3 mpegps vc1t
epaf mpegts vividas
evc mpegtsraw vivo
ffmetadata mpegvideo vmd
filmstrip mpjpeg vobsub
fits mpl2 voc
flac mpsub vpk
flic msf vplayer
flv msnwc_tcp vqf
fourxm msp vvc
frm mtaf w64
fsb mtv wady
fwse musx wav
g722 mv wavarc
g723_1 mvi wc3
g726 mxf webm_dash_manifest
g726le mxg webvtt
g729 nc wsaud
gdv nistsphere wsd
genh nsp wsvqa
gif nsv wtv
gsm nut wv
gxf nuv wve
h261 obu xa
h263 ogg xbin
h264 oma xmd
hca osq xmv
hcom paf xvag
hevc pcm_alaw xwma
hls pcm_f32be yop
hnm pcm_f32le yuv4mpegpipe
ico pcm_f64be
idcin pcm_f64le
Enabled muxers:
a64 h261 pcm_s16le
ac3 h263 pcm_s24be
ac4 h264 pcm_s24le
adts hash pcm_s32be
adx hds pcm_s32le
aiff hevc pcm_s8
alp hls pcm_u16be
amr ico pcm_u16le
amv ilbc pcm_u24be
apm image2 pcm_u24le
apng image2pipe pcm_u32be
aptx ipod pcm_u32le
aptx_hd ircam pcm_u8
argo_asf ismv pcm_vidc
argo_cvg ivf psp
asf jacosub rawvideo
asf_stream kvag rm
ass latm roq
ast lrc rso
au m4v rtp
avi matroska rtp_mpegts
avif matroska_audio rtsp
avm2 md5 sap
avs2 microdvd sbc
avs3 mjpeg scc
bit mkvtimestamp_v2 segafilm
caf mlp segment
cavsvideo mmf smjpeg
codec2 mov smoothstreaming
codec2raw mp2 sox
crc mp3 spdif
dash mp4 spx
data mpeg1system srt
daud mpeg1vcd stream_segment
dfpwm mpeg1video streamhash
dirac mpeg2dvd sup
dnxhd mpeg2svcd swf
dts mpeg2video tee
dv mpeg2vob tg2
eac3 mpegts tgp
evc mpjpeg truehd
f4v mxf tta
ffmetadata mxf_d10 ttml
fifo mxf_opatom uncodedframecrc
fifo_test null vc1
filmstrip nut vc1t
fits obu voc
flac oga vvc
flv ogg w64
framecrc ogv wav
framehash oma webm
framemd5 opus webm_chunk
g722 pcm_alaw webm_dash_manifest
g723_1 pcm_f32be webp
g726 pcm_f32le webvtt
g726le pcm_f64be wsaud
gif pcm_f64le wtv
gsm pcm_mulaw wv
gxf pcm_s16be yuv4mpegpipe
Enabled protocols:
async http rtmp
cache httpproxy rtmpe
concat https rtmps
concatf icecast rtmpt
crypto ipfs_gateway rtmpte
data ipns_gateway rtmpts
fd libsrt rtp
ffrtmpcrypt libssh srtp
ffrtmphttp libzmq subfile
file md5 tcp
ftp mmsh tee
gopher mmst tls
gophers pipe udp
hls prompeg udplite
Enabled filters:
a3dscope crossfeed owdenoise
abench crystalizer pad
abitscope cue pal100bars
acompressor curves pal75bars
acontrast datascope palettegen
acopy dblur paletteuse
acrossfade dcshift pan
acrossover dctdnoiz perms
acrusher ddagrab perspective
acue deband phase
addroi deblock photosensitivity
adeclick decimate pixdesctest
adeclip deconvolve pixelize
adecorrelate dedot pixscope
adelay deesser pp
adenorm deflate pp7
aderivative deflicker premultiply
adrawgraph deinterlace_qsv prewitt
adrc dejudder pseudocolor
adynamicequalizer delogo psnr
adynamicsmooth derain pullup
aecho deshake qp
aemphasis despill random
aeval detelecine readeia608
aevalsrc dialoguenhance readvitc
aexciter dilation realtime
afade displace remap
afdelaysrc dnn_classify removegrain
afftdn dnn_detect removelogo
afftfilt dnn_processing repeatfields
afifo doubleweave replaygain
afir drawbox reverse
afireqsrc drawgraph rgbashift
afirsrc drawgrid rgbtestsrc
aformat drawtext roberts
afreqshift drmeter rotate
afwtdn dynaudnorm rubberband
agate earwax sab
agraphmonitor ebur128 scale
ahistogram edgedetect scale2ref
aiir elbg scale_cuda
aintegral entropy scale_qsv
ainterleave epx scdet
alatency eq scharr
alimiter equalizer scroll
allpass erosion segment
allrgb estdif select
allyuv exposure selectivecolor
aloop extractplanes sendcmd
alphaextract extrastereo separatefields
alphamerge fade setdar
amerge feedback setfield
ametadata fftdnoiz setparams
amix fftfilt setpts
amovie field setrange
amplify fieldhint setsar
amultiply fieldmatch settb
anequalizer fieldorder shear
anlmdn fifo showcqt
anlmf fillborders showcwt
anlms find_rect showfreqs
anoisesrc firequalizer showinfo
anull flanger showpalette
anullsink floodfill showspatial
anullsrc format showspectrum
apad fps showspectrumpic
aperms framepack showvolume
aphasemeter framerate showwaves
aphaser framestep showwavespic
aphaseshift freezedetect shuffleframes
apsnr freezeframes shufflepixels
apsyclip fspp shuffleplanes
apulsator gblur sidechaincompress
arealtime geq sidechaingate
aresample gradfun sidedata
areverse gradients sierpinski
arls graphmonitor signalstats
arnndn grayworld signature
asdr greyedge silencedetect
asegment guided silenceremove
aselect haas sinc
asendcmd haldclut sine
asetnsamples haldclutsrc siti
asetpts hdcd smartblur
asetrate headphone smptebars
asettb hflip smptehdbars
ashowinfo highpass sobel
asidedata highshelf spectrumsynth
asisdr hilbert speechnorm
asoftclip histeq split
aspectralstats histogram spp
asplit hqdn3d sr
ass hqx ssim
astats hstack ssim360
astreamselect hstack_qsv stereo3d
asubboost hsvhold stereotools
asubcut hsvkey stereowiden
asupercut hue streamselect
asuperpass huesaturation subtitles
asuperstop hwdownload super2xsai
atadenoise hwmap superequalizer
atempo hwupload surround
atilt hwupload_cuda swaprect
atrim hysteresis swapuv
avectorscope identity tblend
avgblur idet telecine
avsynctest il testsrc
axcorrelate inflate testsrc2
azmq interlace thistogram
backgroundkey interleave threshold
bandpass join thumbnail
bandreject kerndeint thumbnail_cuda
bass kirsch tile
bbox lagfun tiltshelf
bench latency tinterlace
bilateral lenscorrection tlut2
bilateral_cuda libvmaf tmedian
biquad life tmidequalizer
bitplanenoise limitdiff tmix
blackdetect limiter tonemap
blackframe loop tpad
blend loudnorm transpose
blockdetect lowpass treble
blurdetect lowshelf tremolo
bm3d lumakey trim
boxblur lut unpremultiply
bwdif lut1d unsharp
bwdif_cuda lut2 untile
cas lut3d uspp
ccrepack lutrgb v360
cellauto lutyuv vaguedenoiser
channelmap mandelbrot varblur
channelsplit maskedclamp vectorscope
chorus maskedmax vflip
chromahold maskedmerge vfrdet
chromakey maskedmin vibrance
chromakey_cuda maskedthreshold vibrato
chromanr maskfun vidstabdetect
chromashift mcdeint vidstabtransform
ciescope mcompand vif
codecview median vignette
color mergeplanes virtualbass
colorbalance mestimate vmafmotion
colorchannelmixer metadata volume
colorchart midequalizer volumedetect
colorcontrast minterpolate vpp_qsv
colorcorrect mix vstack
colorhold monochrome vstack_qsv
colorize morpho w3fdif
colorkey movie waveform
colorlevels mpdecimate weave
colormap mptestsrc xbr
colormatrix msad xcorrelate
colorspace multiply xfade
colorspace_cuda negate xmedian
colorspectrum nlmeans xstack
colortemperature nnedi xstack_qsv
compand noformat yadif
compensationdelay noise yadif_cuda
concat normalize yaepblur
convolution null yuvtestsrc
convolve nullsink zmq
copy nullsrc zoneplate
corr oscilloscope zoompan
cover_rect overlay zscale
crop overlay_cuda
cropdetect overlay_qsv
Enabled bsfs:
aac_adtstoasc h264_redundant_pps pcm_rechunk
av1_frame_merge hapqa_extract pgs_frame_merge
av1_frame_split hevc_metadata prores_metadata
av1_metadata hevc_mp4toannexb remove_extradata
chomp imx_dump_header setts
dca_core media100_to_mjpegb text2movsub
dts2pts mjpeg2jpeg trace_headers
dump_extradata mjpega_dump_header truehd_core
dv_error_marker mov2textsub vp9_metadata
eac3_core mp3_header_decompress vp9_raw_reorder
evc_frame_merge mpeg2_metadata vp9_superframe
extract_extradata mpeg4_unpack_bframes vp9_superframe_split
filter_units noise vvc_metadata
h264_metadata null vvc_mp4toannexb
h264_mp4toannexb opus_metadata
Enabled indevs:
dshow lavfi
gdigrab vfwcap
Enabled outdevs:
sdl2

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<!DOCTYPE html>
<html>
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<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Community</title>
<meta name="description" content="Community">
<meta name="keywords" content="Community">
<meta name="resource-type" content="document">
<meta name="distribution" content="global">
<meta name="Generator" content="makeinfo">
<meta name="viewport" content="width=device-width,initial-scale=1">
<link href="#SEC_Contents" rel="contents" title="Table of Contents">
<style type="text/css">
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-->
</style>
</head>
<body lang="en">
<div class="top-level-extent" id="SEC_Top">
<a class="anchor" id="Organisation"></a><div class="element-contents" id="SEC_Contents">
<h2 class="contents-heading">Table of Contents</h2>
<div class="contents">
<ul class="toc-numbered-mark">
<li><a id="toc-Organisation-1" href="#Organisation-1">1 Organisation</a></li>
<li><a id="toc-General-Assembly-1" href="#General-Assembly-1">2 General Assembly</a></li>
<li><a id="toc-Voting-1" href="#Voting-1">3 Voting</a></li>
<li><a id="toc-Technical-Committee-1" href="#Technical-Committee-1">4 Technical Committee</a>
<ul class="toc-numbered-mark">
<li><a id="toc-Resolution-Process-1" href="#Resolution-Process-1">4.1 Resolution Process</a>
<ul class="toc-numbered-mark">
<li><a id="toc-Seizing" href="#Seizing">4.1.1 Seizing</a></li>
<li><a id="toc-Announcement" href="#Announcement">4.1.2 Announcement</a></li>
<li><a id="toc-RFC-call" href="#RFC-call">4.1.3 RFC call</a></li>
<li><a id="toc-Within-TC" href="#Within-TC">4.1.4 Within TC</a></li>
<li><a id="toc-Decisions" href="#Decisions">4.1.5 Decisions</a></li>
</ul></li>
</ul></li>
<li><a id="toc-Community-Committee-1" href="#Community-Committee-1">5 Community Committee</a></li>
<li><a id="toc-Code-of-Conduct-1" href="#Code-of-Conduct-1">6 Code of Conduct</a></li>
</ul>
</div>
</div>
<div class="chapter-level-extent" id="Organisation-1">
<h2 class="chapter">1 Organisation</h2>
<p>The FFmpeg project is organized through a community working on global consensus.
</p>
<p>Decisions are taken by the ensemble of active members, through voting and are aided by two committees.
</p>
<a class="anchor" id="General-Assembly"></a></div>
<div class="chapter-level-extent" id="General-Assembly-1">
<h2 class="chapter">2 General Assembly</h2>
<p>The ensemble of active members is called the General Assembly (GA).
</p>
<p>The General Assembly is sovereign and legitimate for all its decisions regarding the FFmpeg project.
</p>
<p>The General Assembly is made up of active contributors.
</p>
<p>Contributors are considered &quot;active contributors&quot; if they have pushed more than 20 patches in the last 36 months in the main FFmpeg repository, or if they have been voted in by the GA.
</p>
<p>Additional members are added to the General Assembly through a vote after proposal by a member of the General Assembly. They are part of the GA for two years, after which they need a confirmation by the GA.
</p>
<p>A script to generate the current members of the general assembly (minus members voted in) can be found in &lsquo;tools/general_assembly.pl&lsquo;.
</p>
<a class="anchor" id="Voting"></a></div>
<div class="chapter-level-extent" id="Voting-1">
<h2 class="chapter">3 Voting</h2>
<p>Voting is done using a ranked voting system, currently running on https://vote.ffmpeg.org/ .
</p>
<p>Majority vote means more than 50% of the expressed ballots.
</p>
<a class="anchor" id="Technical-Committee"></a></div>
<div class="chapter-level-extent" id="Technical-Committee-1">
<h2 class="chapter">4 Technical Committee</h2>
<p>The Technical Committee (TC) is here to arbitrate and make decisions when technical conflicts occur in the project. They will consider the merits of all the positions, judge them and make a decision.
</p>
<p>The TC resolves technical conflicts but is not a technical steering committee.
</p>
<p>Decisions by the TC are binding for all the contributors.
</p>
<p>Decisions made by the TC can be re-opened after 1 year or by a majority vote of the General Assembly, requested by one of the member of the GA.
</p>
<p>The TC is elected by the General Assembly for a duration of 1 year, and is composed of 5 members. Members can be re-elected if they wish. A majority vote in the General Assembly can trigger a new election of the TC.
</p>
<p>The members of the TC can be elected from outside of the GA. Candidates for election can either be suggested or self-nominated.
</p>
<p>The conflict resolution process is detailed in the resolution process document.
</p>
<p>The TC can be contacted at &lt;tc@ffmpeg&gt;.
</p>
<a class="anchor" id="Resolution-Process"></a><ul class="mini-toc">
<li><a href="#Resolution-Process-1" accesskey="1">Resolution Process</a></li>
</ul>
<div class="section-level-extent" id="Resolution-Process-1">
<h3 class="section">4.1 Resolution Process</h3>
<p>The Technical Committee (TC) is here to arbitrate and make decisions when technical conflicts occur in the project.
</p>
<p>The TC main role is to resolve technical conflicts. It is therefore not a technical steering committee, but it is understood that some decisions might impact the future of the project.
</p>
<ul class="mini-toc">
<li><a href="#Seizing" accesskey="1">Seizing</a></li>
<li><a href="#Announcement" accesskey="2">Announcement</a></li>
<li><a href="#RFC-call" accesskey="3">RFC call</a></li>
<li><a href="#Within-TC" accesskey="4">Within TC</a></li>
<li><a href="#Decisions" accesskey="5">Decisions</a></li>
</ul>
<div class="subsection-level-extent" id="Seizing">
<h4 class="subsection">4.1.1 Seizing</h4>
<p>The TC can take possession of any technical matter that it sees fit.
</p>
<p>To involve the TC in a matter, email tc&nbsp;or CC them on an ongoing discussion.
</p>
<p>As members of TC are developers, they also can email tc&nbsp;to raise an issue.
</p></div>
<div class="subsection-level-extent" id="Announcement">
<h4 class="subsection">4.1.2 Announcement</h4>
<p>The TC, once seized, must announce itself on the main mailing list, with a [TC] tag.
</p>
<p>The TC has 2 modes of operation: a RFC one and an internal one.
</p>
<p>If the TC thinks it needs the input from the larger community, the TC can call for a RFC. Else, it can decide by itself.
</p>
<p>If the disagreement involves a member of the TC, that member should recuse themselves from the decision.
</p>
<p>The decision to use a RFC process or an internal discussion is a discretionary decision of the TC.
</p>
<p>The TC can also reject a seizure for a few reasons such as: the matter was not discussed enough previously; it lacks expertise to reach a beneficial decision on the matter; or the matter is too trivial.
</p></div>
<div class="subsection-level-extent" id="RFC-call">
<h4 class="subsection">4.1.3 RFC call</h4>
<p>In the RFC mode, one person from the TC posts on the mailing list the technical question and will request input from the community.
</p>
<p>The mail will have the following specification:
</p>
<p>a precise title
a specific tag [TC RFC]
a top-level email
contain a precise question that does not exceed 100 words and that is answerable by developers
may have an extra description, or a link to a previous discussion, if deemed necessary,
contain a precise end date for the answers.
</p>
<p>The answers from the community must be on the main mailing list and must have the following specification:
</p>
<p>keep the tag and the title unchanged
limited to 400 words
a first-level, answering directly to the main email
answering to the question.
</p>
<p>Further replies to answers are permitted, as long as they conform to the community standards of politeness, they are limited to 100 words, and are not nested more than once. (max-depth=2)
</p>
<p>After the end-date, mails on the thread will be ignored.
</p>
<p>Violations of those rules will be escalated through the Community Committee.
</p>
<p>After all the emails are in, the TC has 96 hours to give its final decision. Exceptionally, the TC can request an extra delay, that will be notified on the mailing list.
</p></div>
<div class="subsection-level-extent" id="Within-TC">
<h4 class="subsection">4.1.4 Within TC</h4>
<p>In the internal case, the TC has 96 hours to give its final decision. Exceptionally, the TC can request an extra delay.
</p></div>
<div class="subsection-level-extent" id="Decisions">
<h4 class="subsection">4.1.5 Decisions</h4>
<p>The decisions from the TC will be sent on the mailing list, with the [TC] tag.
</p>
<p>Internally, the TC should take decisions with a majority, or using ranked-choice voting.
</p>
<p>The decision from the TC should be published with a summary of the reasons that lead to this decision.
</p>
<p>The decisions from the TC are final, until the matters are reopened after no less than one year.
</p>
<a class="anchor" id="Community-Committee"></a></div>
</div>
</div>
<div class="chapter-level-extent" id="Community-Committee-1">
<h2 class="chapter">5 Community Committee</h2>
<p>The Community Committee (CC) is here to arbitrage and make decisions when inter-personal conflicts occur in the project. It will decide quickly and take actions, for the sake of the project.
</p>
<p>The CC can remove privileges of offending members, including removal of commit access and temporary ban from the community.
</p>
<p>Decisions made by the CC can be re-opened after 1 year or by a majority vote of the General Assembly. Indefinite bans from the community must be confirmed by the General Assembly, in a majority vote.
</p>
<p>The CC is elected by the General Assembly for a duration of 1 year, and is composed of 5 members. Members can be re-elected if they wish. A majority vote in the General Assembly can trigger a new election of the CC.
</p>
<p>The members of the CC can be elected from outside of the GA. Candidates for election can either be suggested or self-nominated.
</p>
<p>The CC is governed by and responsible for enforcing the Code of Conduct.
</p>
<p>The CC can be contacted at &lt;cc@ffmpeg&gt;.
</p>
<a class="anchor" id="Code-of-Conduct"></a></div>
<div class="chapter-level-extent" id="Code-of-Conduct-1">
<h2 class="chapter">6 Code of Conduct</h2>
<p>Be friendly and respectful towards others and third parties.
Treat others the way you yourself want to be treated.
</p>
<p>Be considerate. Not everyone shares the same viewpoint and priorities as you do.
Different opinions and interpretations help the project.
Looking at issues from a different perspective assists development.
</p>
<p>Do not assume malice for things that can be attributed to incompetence. Even if
it is malice, it&rsquo;s rarely good to start with that as initial assumption.
</p>
<p>Stay friendly even if someone acts contrarily. Everyone has a bad day
once in a while.
If you yourself have a bad day or are angry then try to take a break and reply
once you are calm and without anger if you have to.
</p>
<p>Try to help other team members and cooperate if you can.
</p>
<p>The goal of software development is to create technical excellence, not for any
individual to be better and &quot;win&quot; against the others. Large software projects
are only possible and successful through teamwork.
</p>
<p>If someone struggles do not put them down. Give them a helping hand
instead and point them in the right direction.
</p>
<p>Finally, keep in mind the immortal words of Bill and Ted,
&quot;Be excellent to each other.&quot;
</p>
</div>
</div>
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<div class="top-level-extent" id="SEC_Top">
<div class="element-contents" id="SEC_Contents">
<h2 class="contents-heading">Table of Contents</h2>
<div class="contents">
<ul class="toc-numbered-mark">
<li><a id="toc-General-Questions" href="#General-Questions">1 General Questions</a>
<ul class="toc-numbered-mark">
<li><a id="toc-Why-doesn_0027t-FFmpeg-support-feature-_005bxyz_005d_003f" href="#Why-doesn_0027t-FFmpeg-support-feature-_005bxyz_005d_003f">1.1 Why doesn&rsquo;t FFmpeg support feature [xyz]?</a></li>
<li><a id="toc-FFmpeg-does-not-support-codec-XXX_002e-Can-you-include-a-Windows-DLL-loader-to-support-it_003f" href="#FFmpeg-does-not-support-codec-XXX_002e-Can-you-include-a-Windows-DLL-loader-to-support-it_003f">1.2 FFmpeg does not support codec XXX. Can you include a Windows DLL loader to support it?</a></li>
<li><a id="toc-I-cannot-read-this-file-although-this-format-seems-to-be-supported-by-ffmpeg_002e" href="#I-cannot-read-this-file-although-this-format-seems-to-be-supported-by-ffmpeg_002e">1.3 I cannot read this file although this format seems to be supported by ffmpeg.</a></li>
<li><a id="toc-Which-codecs-are-supported-by-Windows_003f" href="#Which-codecs-are-supported-by-Windows_003f">1.4 Which codecs are supported by Windows?</a></li>
</ul></li>
<li><a id="toc-Compilation" href="#Compilation">2 Compilation</a>
<ul class="toc-numbered-mark">
<li><a id="toc-error_003a-can_0027t-find-a-register-in-class-_0027GENERAL_005fREGS_0027-while-reloading-_0027asm_0027" href="#error_003a-can_0027t-find-a-register-in-class-_0027GENERAL_005fREGS_0027-while-reloading-_0027asm_0027">2.1 <code class="code">error: can't find a register in class 'GENERAL_REGS' while reloading 'asm'</code></a></li>
<li><a id="toc-I-have-installed-this-library-with-my-distro_0027s-package-manager_002e-Why-does-configure-not-see-it_003f" href="#I-have-installed-this-library-with-my-distro_0027s-package-manager_002e-Why-does-configure-not-see-it_003f">2.2 I have installed this library with my distro&rsquo;s package manager. Why does <code class="command">configure</code> not see it?</a></li>
<li><a id="toc-How-do-I-make-pkg_002dconfig-find-my-libraries_003f" href="#How-do-I-make-pkg_002dconfig-find-my-libraries_003f">2.3 How do I make <code class="command">pkg-config</code> find my libraries?</a></li>
<li><a id="toc-How-do-I-use-pkg_002dconfig-when-cross_002dcompiling_003f" href="#How-do-I-use-pkg_002dconfig-when-cross_002dcompiling_003f">2.4 How do I use <code class="command">pkg-config</code> when cross-compiling?</a></li>
</ul></li>
<li><a id="toc-Usage" href="#Usage">3 Usage</a>
<ul class="toc-numbered-mark">
<li><a id="toc-ffmpeg-does-not-work_003b-what-is-wrong_003f" href="#ffmpeg-does-not-work_003b-what-is-wrong_003f">3.1 ffmpeg does not work; what is wrong?</a></li>
<li><a id="toc-How-do-I-encode-single-pictures-into-movies_003f" href="#How-do-I-encode-single-pictures-into-movies_003f">3.2 How do I encode single pictures into movies?</a></li>
<li><a id="toc-How-do-I-encode-movie-to-single-pictures_003f" href="#How-do-I-encode-movie-to-single-pictures_003f">3.3 How do I encode movie to single pictures?</a></li>
<li><a id="toc-Why-do-I-see-a-slight-quality-degradation-with-multithreaded-MPEG_002a-encoding_003f" href="#Why-do-I-see-a-slight-quality-degradation-with-multithreaded-MPEG_002a-encoding_003f">3.4 Why do I see a slight quality degradation with multithreaded MPEG* encoding?</a></li>
<li><a id="toc-How-can-I-read-from-the-standard-input-or-write-to-the-standard-output_003f" href="#How-can-I-read-from-the-standard-input-or-write-to-the-standard-output_003f">3.5 How can I read from the standard input or write to the standard output?</a></li>
<li><a id="toc-_002df-jpeg-doesn_0027t-work_002e" href="#g_t_002df-jpeg-doesn_0027t-work_002e">3.6 -f jpeg doesn&rsquo;t work.</a></li>
<li><a id="toc-Why-can-I-not-change-the-frame-rate_003f" href="#Why-can-I-not-change-the-frame-rate_003f">3.7 Why can I not change the frame rate?</a></li>
<li><a id="toc-How-do-I-encode-Xvid-or-DivX-video-with-ffmpeg_003f" href="#How-do-I-encode-Xvid-or-DivX-video-with-ffmpeg_003f">3.8 How do I encode Xvid or DivX video with ffmpeg?</a></li>
<li><a id="toc-Which-are-good-parameters-for-encoding-high-quality-MPEG_002d4_003f" href="#Which-are-good-parameters-for-encoding-high-quality-MPEG_002d4_003f">3.9 Which are good parameters for encoding high quality MPEG-4?</a></li>
<li><a id="toc-Which-are-good-parameters-for-encoding-high-quality-MPEG_002d1_002fMPEG_002d2_003f" href="#Which-are-good-parameters-for-encoding-high-quality-MPEG_002d1_002fMPEG_002d2_003f">3.10 Which are good parameters for encoding high quality MPEG-1/MPEG-2?</a></li>
<li><a id="toc-Interlaced-video-looks-very-bad-when-encoded-with-ffmpeg_002c-what-is-wrong_003f" href="#Interlaced-video-looks-very-bad-when-encoded-with-ffmpeg_002c-what-is-wrong_003f">3.11 Interlaced video looks very bad when encoded with ffmpeg, what is wrong?</a></li>
<li><a id="toc-How-can-I-read-DirectShow-files_003f" href="#How-can-I-read-DirectShow-files_003f">3.12 How can I read DirectShow files?</a></li>
<li><a id="toc-How-can-I-join-video-files_003f" href="#How-can-I-join-video-files_003f">3.13 How can I join video files?</a></li>
<li><a id="toc-How-can-I-concatenate-video-files_003f" href="#How-can-I-concatenate-video-files_003f">3.14 How can I concatenate video files?</a>
<ul class="toc-numbered-mark">
<li><a id="toc-Concatenating-using-the-concat-filter" href="#Concatenating-using-the-concat-filter">3.14.1 Concatenating using the concat <em class="emph">filter</em></a></li>
<li><a id="toc-Concatenating-using-the-concat-demuxer" href="#Concatenating-using-the-concat-demuxer">3.14.2 Concatenating using the concat <em class="emph">demuxer</em></a></li>
<li><a id="toc-Concatenating-using-the-concat-protocol-_0028file-level_0029" href="#Concatenating-using-the-concat-protocol-_0028file-level_0029">3.14.3 Concatenating using the concat <em class="emph">protocol</em> (file level)</a></li>
<li><a id="toc-Concatenating-using-raw-audio-and-video" href="#Concatenating-using-raw-audio-and-video">3.14.4 Concatenating using raw audio and video</a></li>
</ul></li>
<li><a id="toc-Using-_002df-lavfi_002c-audio-becomes-mono-for-no-apparent-reason_002e" href="#Using-_002df-lavfi_002c-audio-becomes-mono-for-no-apparent-reason_002e">3.15 Using <samp class="option">-f lavfi</samp>, audio becomes mono for no apparent reason.</a></li>
<li><a id="toc-Why-does-FFmpeg-not-see-the-subtitles-in-my-VOB-file_003f" href="#Why-does-FFmpeg-not-see-the-subtitles-in-my-VOB-file_003f">3.16 Why does FFmpeg not see the subtitles in my VOB file?</a></li>
<li><a id="toc-Why-was-the-ffmpeg-_002dsameq-option-removed_003f-What-to-use-instead_003f" href="#Why-was-the-ffmpeg-_002dsameq-option-removed_003f-What-to-use-instead_003f">3.17 Why was the <code class="command">ffmpeg</code> <samp class="option">-sameq</samp> option removed? What to use instead?</a></li>
<li><a id="toc-I-have-a-stretched-video_002c-why-does-scaling-does-not-fix-it_003f" href="#I-have-a-stretched-video_002c-why-does-scaling-does-not-fix-it_003f">3.18 I have a stretched video, why does scaling does not fix it?</a></li>
<li><a id="toc-How-do-I-run-ffmpeg-as-a-background-task_003f" href="#How-do-I-run-ffmpeg-as-a-background-task_003f">3.19 How do I run ffmpeg as a background task?</a></li>
<li><a id="toc-How-do-I-prevent-ffmpeg-from-suspending-with-a-message-like-suspended-_0028tty-output_0029_003f" href="#How-do-I-prevent-ffmpeg-from-suspending-with-a-message-like-suspended-_0028tty-output_0029_003f">3.20 How do I prevent ffmpeg from suspending with a message like <em class="emph">suspended (tty output)</em>?</a></li>
</ul></li>
<li><a id="toc-Development" href="#Development">4 Development</a>
<ul class="toc-numbered-mark">
<li><a id="toc-Are-there-examples-illustrating-how-to-use-the-FFmpeg-libraries_002c-particularly-libavcodec-and-libavformat_003f" href="#Are-there-examples-illustrating-how-to-use-the-FFmpeg-libraries_002c-particularly-libavcodec-and-libavformat_003f">4.1 Are there examples illustrating how to use the FFmpeg libraries, particularly libavcodec and libavformat?</a></li>
<li><a id="toc-Can-you-support-my-C-compiler-XXX_003f" href="#Can-you-support-my-C-compiler-XXX_003f">4.2 Can you support my C compiler XXX?</a></li>
<li><a id="toc-Is-Microsoft-Visual-C_002b_002b-supported_003f" href="#Is-Microsoft-Visual-C_002b_002b-supported_003f">4.3 Is Microsoft Visual C++ supported?</a></li>
<li><a id="toc-Can-you-add-automake_002c-libtool-or-autoconf-support_003f" href="#Can-you-add-automake_002c-libtool-or-autoconf-support_003f">4.4 Can you add automake, libtool or autoconf support?</a></li>
<li><a id="toc-Why-not-rewrite-FFmpeg-in-object_002doriented-C_002b_002b_003f" href="#Why-not-rewrite-FFmpeg-in-object_002doriented-C_002b_002b_003f">4.5 Why not rewrite FFmpeg in object-oriented C++?</a></li>
<li><a id="toc-Why-are-the-ffmpeg-programs-devoid-of-debugging-symbols_003f" href="#Why-are-the-ffmpeg-programs-devoid-of-debugging-symbols_003f">4.6 Why are the ffmpeg programs devoid of debugging symbols?</a></li>
<li><a id="toc-I-do-not-like-the-LGPL_002c-can-I-contribute-code-under-the-GPL-instead_003f" href="#I-do-not-like-the-LGPL_002c-can-I-contribute-code-under-the-GPL-instead_003f">4.7 I do not like the LGPL, can I contribute code under the GPL instead?</a></li>
<li><a id="toc-I_0027m-using-FFmpeg-from-within-my-C-application-but-the-linker-complains-about-missing-symbols-from-the-libraries-themselves_002e" href="#I_0027m-using-FFmpeg-from-within-my-C-application-but-the-linker-complains-about-missing-symbols-from-the-libraries-themselves_002e">4.8 I&rsquo;m using FFmpeg from within my C application but the linker complains about missing symbols from the libraries themselves.</a></li>
<li><a id="toc-I_0027m-using-FFmpeg-from-within-my-C_002b_002b-application-but-the-linker-complains-about-missing-symbols-which-seem-to-be-available_002e" href="#I_0027m-using-FFmpeg-from-within-my-C_002b_002b-application-but-the-linker-complains-about-missing-symbols-which-seem-to-be-available_002e">4.9 I&rsquo;m using FFmpeg from within my C++ application but the linker complains about missing symbols which seem to be available.</a></li>
<li><a id="toc-I_0027m-using-libavutil-from-within-my-C_002b_002b-application-but-the-compiler-complains-about-_0027UINT64_005fC_0027-was-not-declared-in-this-scope" href="#I_0027m-using-libavutil-from-within-my-C_002b_002b-application-but-the-compiler-complains-about-_0027UINT64_005fC_0027-was-not-declared-in-this-scope">4.10 I&rsquo;m using libavutil from within my C++ application but the compiler complains about &rsquo;UINT64_C&rsquo; was not declared in this scope</a></li>
<li><a id="toc-I-have-a-file-in-memory-_002f-a-API-different-from-_002aopen_002f_002aread_002f-libc-how-do-I-use-it-with-libavformat_003f" href="#I-have-a-file-in-memory-_002f-a-API-different-from-_002aopen_002f_002aread_002f-libc-how-do-I-use-it-with-libavformat_003f">4.11 I have a file in memory / a API different from *open/*read/ libc how do I use it with libavformat?</a></li>
<li><a id="toc-Where-is-the-documentation-about-ffv1_002c-msmpeg4_002c-asv1_002c-4xm_003f" href="#Where-is-the-documentation-about-ffv1_002c-msmpeg4_002c-asv1_002c-4xm_003f">4.12 Where is the documentation about ffv1, msmpeg4, asv1, 4xm?</a></li>
<li><a id="toc-How-do-I-feed-H_002e263_002dRTP-_0028and-other-codecs-in-RTP_0029-to-libavcodec_003f" href="#How-do-I-feed-H_002e263_002dRTP-_0028and-other-codecs-in-RTP_0029-to-libavcodec_003f">4.13 How do I feed H.263-RTP (and other codecs in RTP) to libavcodec?</a></li>
<li><a id="toc-AVStream_002er_005fframe_005frate-is-wrong_002c-it-is-much-larger-than-the-frame-rate_002e" href="#AVStream_002er_005fframe_005frate-is-wrong_002c-it-is-much-larger-than-the-frame-rate_002e">4.14 AVStream.r_frame_rate is wrong, it is much larger than the frame rate.</a></li>
<li><a id="toc-Why-is-make-fate-not-running-all-tests_003f" href="#Why-is-make-fate-not-running-all-tests_003f">4.15 Why is <code class="code">make fate</code> not running all tests?</a></li>
<li><a id="toc-Why-is-make-fate-not-finding-the-samples_003f" href="#Why-is-make-fate-not-finding-the-samples_003f">4.16 Why is <code class="code">make fate</code> not finding the samples?</a></li>
</ul></li>
</ul>
</div>
</div>
<div class="chapter-level-extent" id="General-Questions">
<h2 class="chapter">1 General Questions</h2>
<ul class="mini-toc">
<li><a href="#Why-doesn_0027t-FFmpeg-support-feature-_005bxyz_005d_003f" accesskey="1">Why doesn&rsquo;t FFmpeg support feature [xyz]?</a></li>
<li><a href="#FFmpeg-does-not-support-codec-XXX_002e-Can-you-include-a-Windows-DLL-loader-to-support-it_003f" accesskey="2">FFmpeg does not support codec XXX. Can you include a Windows DLL loader to support it?</a></li>
<li><a href="#I-cannot-read-this-file-although-this-format-seems-to-be-supported-by-ffmpeg_002e" accesskey="3">I cannot read this file although this format seems to be supported by ffmpeg.</a></li>
<li><a href="#Which-codecs-are-supported-by-Windows_003f" accesskey="4">Which codecs are supported by Windows?</a></li>
</ul>
<div class="section-level-extent" id="Why-doesn_0027t-FFmpeg-support-feature-_005bxyz_005d_003f">
<h3 class="section">1.1 Why doesn&rsquo;t FFmpeg support feature [xyz]?</h3>
<p>Because no one has taken on that task yet. FFmpeg development is
driven by the tasks that are important to the individual developers.
If there is a feature that is important to you, the best way to get
it implemented is to undertake the task yourself or sponsor a developer.
</p>
</div>
<div class="section-level-extent" id="FFmpeg-does-not-support-codec-XXX_002e-Can-you-include-a-Windows-DLL-loader-to-support-it_003f">
<h3 class="section">1.2 FFmpeg does not support codec XXX. Can you include a Windows DLL loader to support it?</h3>
<p>No. Windows DLLs are not portable, bloated and often slow.
Moreover FFmpeg strives to support all codecs natively.
A DLL loader is not conducive to that goal.
</p>
</div>
<div class="section-level-extent" id="I-cannot-read-this-file-although-this-format-seems-to-be-supported-by-ffmpeg_002e">
<h3 class="section">1.3 I cannot read this file although this format seems to be supported by ffmpeg.</h3>
<p>Even if ffmpeg can read the container format, it may not support all its
codecs. Please consult the supported codec list in the ffmpeg
documentation.
</p>
</div>
<div class="section-level-extent" id="Which-codecs-are-supported-by-Windows_003f">
<h3 class="section">1.4 Which codecs are supported by Windows?</h3>
<p>Windows does not support standard formats like MPEG very well, unless you
install some additional codecs.
</p>
<p>The following list of video codecs should work on most Windows systems:
</p><dl class="table">
<dt><samp class="option">msmpeg4v2</samp></dt>
<dd><p>.avi/.asf
</p></dd>
<dt><samp class="option">msmpeg4</samp></dt>
<dd><p>.asf only
</p></dd>
<dt><samp class="option">wmv1</samp></dt>
<dd><p>.asf only
</p></dd>
<dt><samp class="option">wmv2</samp></dt>
<dd><p>.asf only
</p></dd>
<dt><samp class="option">mpeg4</samp></dt>
<dd><p>Only if you have some MPEG-4 codec like ffdshow or Xvid installed.
</p></dd>
<dt><samp class="option">mpeg1video</samp></dt>
<dd><p>.mpg only
</p></dd>
</dl>
<p>Note, ASF files often have .wmv or .wma extensions in Windows. It should also
be mentioned that Microsoft claims a patent on the ASF format, and may sue
or threaten users who create ASF files with non-Microsoft software. It is
strongly advised to avoid ASF where possible.
</p>
<p>The following list of audio codecs should work on most Windows systems:
</p><dl class="table">
<dt><samp class="option">adpcm_ima_wav</samp></dt>
<dt><samp class="option">adpcm_ms</samp></dt>
<dt><samp class="option">pcm_s16le</samp></dt>
<dd><p>always
</p></dd>
<dt><samp class="option">libmp3lame</samp></dt>
<dd><p>If some MP3 codec like LAME is installed.
</p></dd>
</dl>
</div>
</div>
<div class="chapter-level-extent" id="Compilation">
<h2 class="chapter">2 Compilation</h2>
<ul class="mini-toc">
<li><a href="#error_003a-can_0027t-find-a-register-in-class-_0027GENERAL_005fREGS_0027-while-reloading-_0027asm_0027" accesskey="1"><code class="code">error: can't find a register in class 'GENERAL_REGS' while reloading 'asm'</code></a></li>
<li><a href="#I-have-installed-this-library-with-my-distro_0027s-package-manager_002e-Why-does-configure-not-see-it_003f" accesskey="2">I have installed this library with my distro&rsquo;s package manager. Why does <code class="command">configure</code> not see it?</a></li>
<li><a href="#How-do-I-make-pkg_002dconfig-find-my-libraries_003f" accesskey="3">How do I make <code class="command">pkg-config</code> find my libraries?</a></li>
<li><a href="#How-do-I-use-pkg_002dconfig-when-cross_002dcompiling_003f" accesskey="4">How do I use <code class="command">pkg-config</code> when cross-compiling?</a></li>
</ul>
<div class="section-level-extent" id="error_003a-can_0027t-find-a-register-in-class-_0027GENERAL_005fREGS_0027-while-reloading-_0027asm_0027">
<h3 class="section">2.1 <code class="code">error: can't find a register in class 'GENERAL_REGS' while reloading 'asm'</code></h3>
<p>This is a bug in gcc. Do not report it to us. Instead, please report it to
the gcc developers. Note that we will not add workarounds for gcc bugs.
</p>
<p>Also note that (some of) the gcc developers believe this is not a bug or
not a bug they should fix:
<a class="url" href="https://gcc.gnu.org/bugzilla/show_bug.cgi?id=11203">https://gcc.gnu.org/bugzilla/show_bug.cgi?id=11203</a>.
Then again, some of them do not know the difference between an undecidable
problem and an NP-hard problem...
</p>
</div>
<div class="section-level-extent" id="I-have-installed-this-library-with-my-distro_0027s-package-manager_002e-Why-does-configure-not-see-it_003f">
<h3 class="section">2.2 I have installed this library with my distro&rsquo;s package manager. Why does <code class="command">configure</code> not see it?</h3>
<p>Distributions usually split libraries in several packages. The main package
contains the files necessary to run programs using the library. The
development package contains the files necessary to build programs using the
library. Sometimes, docs and/or data are in a separate package too.
</p>
<p>To build FFmpeg, you need to install the development package. It is usually
called <samp class="file">libfoo-dev</samp> or <samp class="file">libfoo-devel</samp>. You can remove it after the
build is finished, but be sure to keep the main package.
</p>
</div>
<div class="section-level-extent" id="How-do-I-make-pkg_002dconfig-find-my-libraries_003f">
<h3 class="section">2.3 How do I make <code class="command">pkg-config</code> find my libraries?</h3>
<p>Somewhere along with your libraries, there is a <samp class="file">.pc</samp> file (or several)
in a <samp class="file">pkgconfig</samp> directory. You need to set environment variables to
point <code class="command">pkg-config</code> to these files.
</p>
<p>If you need to <em class="emph">add</em> directories to <code class="command">pkg-config</code>&rsquo;s search list
(typical use case: library installed separately), add it to
<code class="code">$PKG_CONFIG_PATH</code>:
</p>
<div class="example">
<pre class="example-preformatted">export PKG_CONFIG_PATH=/opt/x264/lib/pkgconfig:/opt/opus/lib/pkgconfig
</pre></div>
<p>If you need to <em class="emph">replace</em> <code class="command">pkg-config</code>&rsquo;s search list
(typical use case: cross-compiling), set it in
<code class="code">$PKG_CONFIG_LIBDIR</code>:
</p>
<div class="example">
<pre class="example-preformatted">export PKG_CONFIG_LIBDIR=/home/me/cross/usr/lib/pkgconfig:/home/me/cross/usr/local/lib/pkgconfig
</pre></div>
<p>If you need to know the library&rsquo;s internal dependencies (typical use: static
linking), add the <code class="code">--static</code> option to <code class="command">pkg-config</code>:
</p>
<div class="example">
<pre class="example-preformatted">./configure --pkg-config-flags=--static
</pre></div>
</div>
<div class="section-level-extent" id="How-do-I-use-pkg_002dconfig-when-cross_002dcompiling_003f">
<h3 class="section">2.4 How do I use <code class="command">pkg-config</code> when cross-compiling?</h3>
<p>The best way is to install <code class="command">pkg-config</code> in your cross-compilation
environment. It will automatically use the cross-compilation libraries.
</p>
<p>You can also use <code class="command">pkg-config</code> from the host environment by
specifying explicitly <code class="code">--pkg-config=pkg-config</code> to <code class="command">configure</code>.
In that case, you must point <code class="command">pkg-config</code> to the correct directories
using the <code class="code">PKG_CONFIG_LIBDIR</code>, as explained in the previous entry.
</p>
<p>As an intermediate solution, you can place in your cross-compilation
environment a script that calls the host <code class="command">pkg-config</code> with
<code class="code">PKG_CONFIG_LIBDIR</code> set. That script can look like that:
</p>
<div class="example">
<pre class="example-preformatted">#!/bin/sh
PKG_CONFIG_LIBDIR=/path/to/cross/lib/pkgconfig
export PKG_CONFIG_LIBDIR
exec /usr/bin/pkg-config &quot;$@&quot;
</pre></div>
</div>
</div>
<div class="chapter-level-extent" id="Usage">
<h2 class="chapter">3 Usage</h2>
<ul class="mini-toc">
<li><a href="#ffmpeg-does-not-work_003b-what-is-wrong_003f" accesskey="1">ffmpeg does not work; what is wrong?</a></li>
<li><a href="#How-do-I-encode-single-pictures-into-movies_003f" accesskey="2">How do I encode single pictures into movies?</a></li>
<li><a href="#How-do-I-encode-movie-to-single-pictures_003f" accesskey="3">How do I encode movie to single pictures?</a></li>
<li><a href="#Why-do-I-see-a-slight-quality-degradation-with-multithreaded-MPEG_002a-encoding_003f" accesskey="4">Why do I see a slight quality degradation with multithreaded MPEG* encoding?</a></li>
<li><a href="#How-can-I-read-from-the-standard-input-or-write-to-the-standard-output_003f" accesskey="5">How can I read from the standard input or write to the standard output?</a></li>
<li><a href="#g_t_002df-jpeg-doesn_0027t-work_002e" accesskey="6">-f jpeg doesn&rsquo;t work.</a></li>
<li><a href="#Why-can-I-not-change-the-frame-rate_003f" accesskey="7">Why can I not change the frame rate?</a></li>
<li><a href="#How-do-I-encode-Xvid-or-DivX-video-with-ffmpeg_003f" accesskey="8">How do I encode Xvid or DivX video with ffmpeg?</a></li>
<li><a href="#Which-are-good-parameters-for-encoding-high-quality-MPEG_002d4_003f" accesskey="9">Which are good parameters for encoding high quality MPEG-4?</a></li>
<li><a href="#Which-are-good-parameters-for-encoding-high-quality-MPEG_002d1_002fMPEG_002d2_003f">Which are good parameters for encoding high quality MPEG-1/MPEG-2?</a></li>
<li><a href="#Interlaced-video-looks-very-bad-when-encoded-with-ffmpeg_002c-what-is-wrong_003f">Interlaced video looks very bad when encoded with ffmpeg, what is wrong?</a></li>
<li><a href="#How-can-I-read-DirectShow-files_003f">How can I read DirectShow files?</a></li>
<li><a href="#How-can-I-join-video-files_003f">How can I join video files?</a></li>
<li><a href="#How-can-I-concatenate-video-files_003f">How can I concatenate video files?</a></li>
<li><a href="#Using-_002df-lavfi_002c-audio-becomes-mono-for-no-apparent-reason_002e">Using <samp class="option">-f lavfi</samp>, audio becomes mono for no apparent reason.</a></li>
<li><a href="#Why-does-FFmpeg-not-see-the-subtitles-in-my-VOB-file_003f">Why does FFmpeg not see the subtitles in my VOB file?</a></li>
<li><a href="#Why-was-the-ffmpeg-_002dsameq-option-removed_003f-What-to-use-instead_003f">Why was the <code class="command">ffmpeg</code> <samp class="option">-sameq</samp> option removed? What to use instead?</a></li>
<li><a href="#I-have-a-stretched-video_002c-why-does-scaling-does-not-fix-it_003f">I have a stretched video, why does scaling does not fix it?</a></li>
<li><a href="#How-do-I-run-ffmpeg-as-a-background-task_003f">How do I run ffmpeg as a background task?</a></li>
<li><a href="#How-do-I-prevent-ffmpeg-from-suspending-with-a-message-like-suspended-_0028tty-output_0029_003f">How do I prevent ffmpeg from suspending with a message like <em class="emph">suspended (tty output)</em>?</a></li>
</ul>
<div class="section-level-extent" id="ffmpeg-does-not-work_003b-what-is-wrong_003f">
<h3 class="section">3.1 ffmpeg does not work; what is wrong?</h3>
<p>Try a <code class="code">make distclean</code> in the ffmpeg source directory before the build.
If this does not help see
(<a class="url" href="https://ffmpeg.org/bugreports.html">https://ffmpeg.org/bugreports.html</a>).
</p>
</div>
<div class="section-level-extent" id="How-do-I-encode-single-pictures-into-movies_003f">
<h3 class="section">3.2 How do I encode single pictures into movies?</h3>
<p>First, rename your pictures to follow a numerical sequence.
For example, img1.jpg, img2.jpg, img3.jpg,...
Then you may run:
</p>
<div class="example">
<pre class="example-preformatted">ffmpeg -f image2 -i img%d.jpg /tmp/a.mpg
</pre></div>
<p>Notice that &lsquo;<samp class="samp">%d</samp>&rsquo; is replaced by the image number.
</p>
<p><samp class="file">img%03d.jpg</samp> means the sequence <samp class="file">img001.jpg</samp>, <samp class="file">img002.jpg</samp>, etc.
</p>
<p>Use the <samp class="option">-start_number</samp> option to declare a starting number for
the sequence. This is useful if your sequence does not start with
<samp class="file">img001.jpg</samp> but is still in a numerical order. The following
example will start with <samp class="file">img100.jpg</samp>:
</p>
<div class="example">
<pre class="example-preformatted">ffmpeg -f image2 -start_number 100 -i img%d.jpg /tmp/a.mpg
</pre></div>
<p>If you have large number of pictures to rename, you can use the
following command to ease the burden. The command, using the bourne
shell syntax, symbolically links all files in the current directory
that match <code class="code">*jpg</code> to the <samp class="file">/tmp</samp> directory in the sequence of
<samp class="file">img001.jpg</samp>, <samp class="file">img002.jpg</samp> and so on.
</p>
<div class="example">
<pre class="example-preformatted">x=1; for i in *jpg; do counter=$(printf %03d $x); ln -s &quot;$i&quot; /tmp/img&quot;$counter&quot;.jpg; x=$(($x+1)); done
</pre></div>
<p>If you want to sequence them by oldest modified first, substitute
<code class="code">$(ls -r -t *jpg)</code> in place of <code class="code">*jpg</code>.
</p>
<p>Then run:
</p>
<div class="example">
<pre class="example-preformatted">ffmpeg -f image2 -i /tmp/img%03d.jpg /tmp/a.mpg
</pre></div>
<p>The same logic is used for any image format that ffmpeg reads.
</p>
<p>You can also use <code class="command">cat</code> to pipe images to ffmpeg:
</p>
<div class="example">
<pre class="example-preformatted">cat *.jpg | ffmpeg -f image2pipe -c:v mjpeg -i - output.mpg
</pre></div>
</div>
<div class="section-level-extent" id="How-do-I-encode-movie-to-single-pictures_003f">
<h3 class="section">3.3 How do I encode movie to single pictures?</h3>
<p>Use:
</p>
<div class="example">
<pre class="example-preformatted">ffmpeg -i movie.mpg movie%d.jpg
</pre></div>
<p>The <samp class="file">movie.mpg</samp> used as input will be converted to
<samp class="file">movie1.jpg</samp>, <samp class="file">movie2.jpg</samp>, etc...
</p>
<p>Instead of relying on file format self-recognition, you may also use
</p><dl class="table">
<dt><samp class="option">-c:v ppm</samp></dt>
<dt><samp class="option">-c:v png</samp></dt>
<dt><samp class="option">-c:v mjpeg</samp></dt>
</dl>
<p>to force the encoding.
</p>
<p>Applying that to the previous example:
</p><div class="example">
<pre class="example-preformatted">ffmpeg -i movie.mpg -f image2 -c:v mjpeg menu%d.jpg
</pre></div>
<p>Beware that there is no &quot;jpeg&quot; codec. Use &quot;mjpeg&quot; instead.
</p>
</div>
<div class="section-level-extent" id="Why-do-I-see-a-slight-quality-degradation-with-multithreaded-MPEG_002a-encoding_003f">
<h3 class="section">3.4 Why do I see a slight quality degradation with multithreaded MPEG* encoding?</h3>
<p>For multithreaded MPEG* encoding, the encoded slices must be independent,
otherwise thread n would practically have to wait for n-1 to finish, so it&rsquo;s
quite logical that there is a small reduction of quality. This is not a bug.
</p>
</div>
<div class="section-level-extent" id="How-can-I-read-from-the-standard-input-or-write-to-the-standard-output_003f">
<h3 class="section">3.5 How can I read from the standard input or write to the standard output?</h3>
<p>Use <samp class="file">-</samp> as file name.
</p>
</div>
<div class="section-level-extent" id="g_t_002df-jpeg-doesn_0027t-work_002e">
<h3 class="section">3.6 -f jpeg doesn&rsquo;t work.</h3>
<p>Try &rsquo;-f image2 test%d.jpg&rsquo;.
</p>
</div>
<div class="section-level-extent" id="Why-can-I-not-change-the-frame-rate_003f">
<h3 class="section">3.7 Why can I not change the frame rate?</h3>
<p>Some codecs, like MPEG-1/2, only allow a small number of fixed frame rates.
Choose a different codec with the -c:v command line option.
</p>
</div>
<div class="section-level-extent" id="How-do-I-encode-Xvid-or-DivX-video-with-ffmpeg_003f">
<h3 class="section">3.8 How do I encode Xvid or DivX video with ffmpeg?</h3>
<p>Both Xvid and DivX (version 4+) are implementations of the ISO MPEG-4
standard (note that there are many other coding formats that use this
same standard). Thus, use &rsquo;-c:v mpeg4&rsquo; to encode in these formats. The
default fourcc stored in an MPEG-4-coded file will be &rsquo;FMP4&rsquo;. If you want
a different fourcc, use the &rsquo;-vtag&rsquo; option. E.g., &rsquo;-vtag xvid&rsquo; will
force the fourcc &rsquo;xvid&rsquo; to be stored as the video fourcc rather than the
default.
</p>
</div>
<div class="section-level-extent" id="Which-are-good-parameters-for-encoding-high-quality-MPEG_002d4_003f">
<h3 class="section">3.9 Which are good parameters for encoding high quality MPEG-4?</h3>
<p>&rsquo;-mbd rd -flags +mv4+aic -trellis 2 -cmp 2 -subcmp 2 -g 300 -pass 1/2&rsquo;,
things to try: &rsquo;-bf 2&rsquo;, &rsquo;-mpv_flags qp_rd&rsquo;, &rsquo;-mpv_flags mv0&rsquo;, &rsquo;-mpv_flags skip_rd&rsquo;.
</p>
</div>
<div class="section-level-extent" id="Which-are-good-parameters-for-encoding-high-quality-MPEG_002d1_002fMPEG_002d2_003f">
<h3 class="section">3.10 Which are good parameters for encoding high quality MPEG-1/MPEG-2?</h3>
<p>&rsquo;-mbd rd -trellis 2 -cmp 2 -subcmp 2 -g 100 -pass 1/2&rsquo;
but beware the &rsquo;-g 100&rsquo; might cause problems with some decoders.
Things to try: &rsquo;-bf 2&rsquo;, &rsquo;-mpv_flags qp_rd&rsquo;, &rsquo;-mpv_flags mv0&rsquo;, &rsquo;-mpv_flags skip_rd&rsquo;.
</p>
</div>
<div class="section-level-extent" id="Interlaced-video-looks-very-bad-when-encoded-with-ffmpeg_002c-what-is-wrong_003f">
<h3 class="section">3.11 Interlaced video looks very bad when encoded with ffmpeg, what is wrong?</h3>
<p>You should use &rsquo;-flags +ilme+ildct&rsquo; and maybe &rsquo;-flags +alt&rsquo; for interlaced
material, and try &rsquo;-top 0/1&rsquo; if the result looks really messed-up.
</p>
</div>
<div class="section-level-extent" id="How-can-I-read-DirectShow-files_003f">
<h3 class="section">3.12 How can I read DirectShow files?</h3>
<p>If you have built FFmpeg with <code class="code">./configure --enable-avisynth</code>
(only possible on MinGW/Cygwin platforms),
then you may use any file that DirectShow can read as input.
</p>
<p>Just create an &quot;input.avs&quot; text file with this single line ...
</p><div class="example">
<pre class="example-preformatted">DirectShowSource(&quot;C:\path to your file\yourfile.asf&quot;)
</pre></div>
<p>... and then feed that text file to ffmpeg:
</p><div class="example">
<pre class="example-preformatted">ffmpeg -i input.avs
</pre></div>
<p>For ANY other help on AviSynth, please visit the
<a class="uref" href="http://www.avisynth.org/">AviSynth homepage</a>.
</p>
</div>
<div class="section-level-extent" id="How-can-I-join-video-files_003f">
<h3 class="section">3.13 How can I join video files?</h3>
<p>To &quot;join&quot; video files is quite ambiguous. The following list explains the
different kinds of &quot;joining&quot; and points out how those are addressed in
FFmpeg. To join video files may mean:
</p>
<ul class="itemize mark-bullet">
<li>To put them one after the other: this is called to <em class="emph">concatenate</em> them
(in short: concat) and is addressed
<a class="ref" href="#How-can-I-concatenate-video-files">in this very faq</a>.
</li><li>To put them together in the same file, to let the user choose between the
different versions (example: different audio languages): this is called to
<em class="emph">multiplex</em> them together (in short: mux), and is done by simply
invoking ffmpeg with several <samp class="option">-i</samp> options.
</li><li>For audio, to put all channels together in a single stream (example: two
mono streams into one stereo stream): this is sometimes called to
<em class="emph">merge</em> them, and can be done using the
<a class="url" href="ffmpeg-filters.html#amerge"><code class="code">amerge</code></a> filter.
</li><li>For audio, to play one on top of the other: this is called to <em class="emph">mix</em>
them, and can be done by first merging them into a single stream and then
using the <a class="url" href="ffmpeg-filters.html#pan"><code class="code">pan</code></a> filter to mix
the channels at will.
</li><li>For video, to display both together, side by side or one on top of a part of
the other; it can be done using the
<a class="url" href="ffmpeg-filters.html#overlay"><code class="code">overlay</code></a> video filter.
</li></ul>
<a class="anchor" id="How-can-I-concatenate-video-files"></a></div>
<div class="section-level-extent" id="How-can-I-concatenate-video-files_003f">
<h3 class="section">3.14 How can I concatenate video files?</h3>
<p>There are several solutions, depending on the exact circumstances.
</p>
<ul class="mini-toc">
<li><a href="#Concatenating-using-the-concat-filter" accesskey="1">Concatenating using the concat <em class="emph">filter</em></a></li>
<li><a href="#Concatenating-using-the-concat-demuxer" accesskey="2">Concatenating using the concat <em class="emph">demuxer</em></a></li>
<li><a href="#Concatenating-using-the-concat-protocol-_0028file-level_0029" accesskey="3">Concatenating using the concat <em class="emph">protocol</em> (file level)</a></li>
<li><a href="#Concatenating-using-raw-audio-and-video" accesskey="4">Concatenating using raw audio and video</a></li>
</ul>
<div class="subsection-level-extent" id="Concatenating-using-the-concat-filter">
<h4 class="subsection">3.14.1 Concatenating using the concat <em class="emph">filter</em></h4>
<p>FFmpeg has a <a class="url" href="ffmpeg-filters.html#concat"><code class="code">concat</code></a> filter designed specifically for that, with examples in the
documentation. This operation is recommended if you need to re-encode.
</p>
</div>
<div class="subsection-level-extent" id="Concatenating-using-the-concat-demuxer">
<h4 class="subsection">3.14.2 Concatenating using the concat <em class="emph">demuxer</em></h4>
<p>FFmpeg has a <a class="url" href="ffmpeg-formats.html#concat"><code class="code">concat</code></a> demuxer which you can use when you want to avoid a re-encode and
your format doesn&rsquo;t support file level concatenation.
</p>
</div>
<div class="subsection-level-extent" id="Concatenating-using-the-concat-protocol-_0028file-level_0029">
<h4 class="subsection">3.14.3 Concatenating using the concat <em class="emph">protocol</em> (file level)</h4>
<p>FFmpeg has a <a class="url" href="ffmpeg-protocols.html#concat"><code class="code">concat</code></a> protocol designed specifically for that, with examples in the
documentation.
</p>
<p>A few multimedia containers (MPEG-1, MPEG-2 PS, DV) allow one to concatenate
video by merely concatenating the files containing them.
</p>
<p>Hence you may concatenate your multimedia files by first transcoding them to
these privileged formats, then using the humble <code class="code">cat</code> command (or the
equally humble <code class="code">copy</code> under Windows), and finally transcoding back to your
format of choice.
</p>
<div class="example">
<pre class="example-preformatted">ffmpeg -i input1.avi -qscale:v 1 intermediate1.mpg
ffmpeg -i input2.avi -qscale:v 1 intermediate2.mpg
cat intermediate1.mpg intermediate2.mpg &gt; intermediate_all.mpg
ffmpeg -i intermediate_all.mpg -qscale:v 2 output.avi
</pre></div>
<p>Additionally, you can use the <code class="code">concat</code> protocol instead of <code class="code">cat</code> or
<code class="code">copy</code> which will avoid creation of a potentially huge intermediate file.
</p>
<div class="example">
<pre class="example-preformatted">ffmpeg -i input1.avi -qscale:v 1 intermediate1.mpg
ffmpeg -i input2.avi -qscale:v 1 intermediate2.mpg
ffmpeg -i concat:&quot;intermediate1.mpg|intermediate2.mpg&quot; -c copy intermediate_all.mpg
ffmpeg -i intermediate_all.mpg -qscale:v 2 output.avi
</pre></div>
<p>Note that you may need to escape the character &quot;|&quot; which is special for many
shells.
</p>
<p>Another option is usage of named pipes, should your platform support it:
</p>
<div class="example">
<pre class="example-preformatted">mkfifo intermediate1.mpg
mkfifo intermediate2.mpg
ffmpeg -i input1.avi -qscale:v 1 -y intermediate1.mpg &lt; /dev/null &amp;
ffmpeg -i input2.avi -qscale:v 1 -y intermediate2.mpg &lt; /dev/null &amp;
cat intermediate1.mpg intermediate2.mpg |\
ffmpeg -f mpeg -i - -c:v mpeg4 -c:a libmp3lame output.avi
</pre></div>
</div>
<div class="subsection-level-extent" id="Concatenating-using-raw-audio-and-video">
<h4 class="subsection">3.14.4 Concatenating using raw audio and video</h4>
<p>Similarly, the yuv4mpegpipe format, and the raw video, raw audio codecs also
allow concatenation, and the transcoding step is almost lossless.
When using multiple yuv4mpegpipe(s), the first line needs to be discarded
from all but the first stream. This can be accomplished by piping through
<code class="code">tail</code> as seen below. Note that when piping through <code class="code">tail</code> you
must use command grouping, <code class="code">{ ;}</code>, to background properly.
</p>
<p>For example, let&rsquo;s say we want to concatenate two FLV files into an
output.flv file:
</p>
<div class="example">
<pre class="example-preformatted">mkfifo temp1.a
mkfifo temp1.v
mkfifo temp2.a
mkfifo temp2.v
mkfifo all.a
mkfifo all.v
ffmpeg -i input1.flv -vn -f u16le -c:a pcm_s16le -ac 2 -ar 44100 - &gt; temp1.a &lt; /dev/null &amp;
ffmpeg -i input2.flv -vn -f u16le -c:a pcm_s16le -ac 2 -ar 44100 - &gt; temp2.a &lt; /dev/null &amp;
ffmpeg -i input1.flv -an -f yuv4mpegpipe - &gt; temp1.v &lt; /dev/null &amp;
{ ffmpeg -i input2.flv -an -f yuv4mpegpipe - &lt; /dev/null | tail -n +2 &gt; temp2.v ; } &amp;
cat temp1.a temp2.a &gt; all.a &amp;
cat temp1.v temp2.v &gt; all.v &amp;
ffmpeg -f u16le -c:a pcm_s16le -ac 2 -ar 44100 -i all.a \
-f yuv4mpegpipe -i all.v \
-y output.flv
rm temp[12].[av] all.[av]
</pre></div>
</div>
</div>
<div class="section-level-extent" id="Using-_002df-lavfi_002c-audio-becomes-mono-for-no-apparent-reason_002e">
<h3 class="section">3.15 Using <samp class="option">-f lavfi</samp>, audio becomes mono for no apparent reason.</h3>
<p>Use <samp class="option">-dumpgraph -</samp> to find out exactly where the channel layout is
lost.
</p>
<p>Most likely, it is through <code class="code">auto-inserted aresample</code>. Try to understand
why the converting filter was needed at that place.
</p>
<p>Just before the output is a likely place, as <samp class="option">-f lavfi</samp> currently
only support packed S16.
</p>
<p>Then insert the correct <code class="code">aformat</code> explicitly in the filtergraph,
specifying the exact format.
</p>
<div class="example">
<pre class="example-preformatted">aformat=sample_fmts=s16:channel_layouts=stereo
</pre></div>
</div>
<div class="section-level-extent" id="Why-does-FFmpeg-not-see-the-subtitles-in-my-VOB-file_003f">
<h3 class="section">3.16 Why does FFmpeg not see the subtitles in my VOB file?</h3>
<p>VOB and a few other formats do not have a global header that describes
everything present in the file. Instead, applications are supposed to scan
the file to see what it contains. Since VOB files are frequently large, only
the beginning is scanned. If the subtitles happen only later in the file,
they will not be initially detected.
</p>
<p>Some applications, including the <code class="code">ffmpeg</code> command-line tool, can only
work with streams that were detected during the initial scan; streams that
are detected later are ignored.
</p>
<p>The size of the initial scan is controlled by two options: <code class="code">probesize</code>
(default ~5 Mo) and <code class="code">analyzeduration</code> (default 5,000,000 µs = 5 s). For
the subtitle stream to be detected, both values must be large enough.
</p>
</div>
<div class="section-level-extent" id="Why-was-the-ffmpeg-_002dsameq-option-removed_003f-What-to-use-instead_003f">
<h3 class="section">3.17 Why was the <code class="command">ffmpeg</code> <samp class="option">-sameq</samp> option removed? What to use instead?</h3>
<p>The <samp class="option">-sameq</samp> option meant &quot;same quantizer&quot;, and made sense only in a
very limited set of cases. Unfortunately, a lot of people mistook it for
&quot;same quality&quot; and used it in places where it did not make sense: it had
roughly the expected visible effect, but achieved it in a very inefficient
way.
</p>
<p>Each encoder has its own set of options to set the quality-vs-size balance,
use the options for the encoder you are using to set the quality level to a
point acceptable for your tastes. The most common options to do that are
<samp class="option">-qscale</samp> and <samp class="option">-qmax</samp>, but you should peruse the documentation
of the encoder you chose.
</p>
</div>
<div class="section-level-extent" id="I-have-a-stretched-video_002c-why-does-scaling-does-not-fix-it_003f">
<h3 class="section">3.18 I have a stretched video, why does scaling does not fix it?</h3>
<p>A lot of video codecs and formats can store the <em class="emph">aspect ratio</em> of the
video: this is the ratio between the width and the height of either the full
image (DAR, display aspect ratio) or individual pixels (SAR, sample aspect
ratio). For example, EGA screens at resolution 640×350 had 4:3 DAR and 35:48
SAR.
</p>
<p>Most still image processing work with square pixels, i.e. 1:1 SAR, but a lot
of video standards, especially from the analogic-numeric transition era, use
non-square pixels.
</p>
<p>Most processing filters in FFmpeg handle the aspect ratio to avoid
stretching the image: cropping adjusts the DAR to keep the SAR constant,
scaling adjusts the SAR to keep the DAR constant.
</p>
<p>If you want to stretch, or “unstretch”, the image, you need to override the
information with the
<a class="url" href="ffmpeg-filters.html#setdar_002c-setsar"><code class="code">setdar or setsar filters</code></a>.
</p>
<p>Do not forget to examine carefully the original video to check whether the
stretching comes from the image or from the aspect ratio information.
</p>
<p>For example, to fix a badly encoded EGA capture, use the following commands,
either the first one to upscale to square pixels or the second one to set
the correct aspect ratio or the third one to avoid transcoding (may not work
depending on the format / codec / player / phase of the moon):
</p>
<div class="example">
<pre class="example-preformatted">ffmpeg -i ega_screen.nut -vf scale=640:480,setsar=1 ega_screen_scaled.nut
ffmpeg -i ega_screen.nut -vf setdar=4/3 ega_screen_anamorphic.nut
ffmpeg -i ega_screen.nut -aspect 4/3 -c copy ega_screen_overridden.nut
</pre></div>
<a class="anchor" id="background-task"></a></div>
<div class="section-level-extent" id="How-do-I-run-ffmpeg-as-a-background-task_003f">
<h3 class="section">3.19 How do I run ffmpeg as a background task?</h3>
<p>ffmpeg normally checks the console input, for entries like &quot;q&quot; to stop
and &quot;?&quot; to give help, while performing operations. ffmpeg does not have a way of
detecting when it is running as a background task.
When it checks the console input, that can cause the process running ffmpeg
in the background to suspend.
</p>
<p>To prevent those input checks, allowing ffmpeg to run as a background task,
use the <a class="url" href="ffmpeg.html#stdin-option"><code class="code">-nostdin</code> option</a>
in the ffmpeg invocation. This is effective whether you run ffmpeg in a shell
or invoke ffmpeg in its own process via an operating system API.
</p>
<p>As an alternative, when you are running ffmpeg in a shell, you can redirect
standard input to <code class="code">/dev/null</code> (on Linux and macOS)
or <code class="code">NUL</code> (on Windows). You can do this redirect either
on the ffmpeg invocation, or from a shell script which calls ffmpeg.
</p>
<p>For example:
</p>
<div class="example">
<pre class="example-preformatted">ffmpeg -nostdin -i INPUT OUTPUT
</pre></div>
<p>or (on Linux, macOS, and other UNIX-like shells):
</p>
<div class="example">
<pre class="example-preformatted">ffmpeg -i INPUT OUTPUT &lt;/dev/null
</pre></div>
<p>or (on Windows):
</p>
<div class="example">
<pre class="example-preformatted">ffmpeg -i INPUT OUTPUT &lt;NUL
</pre></div>
</div>
<div class="section-level-extent" id="How-do-I-prevent-ffmpeg-from-suspending-with-a-message-like-suspended-_0028tty-output_0029_003f">
<h3 class="section">3.20 How do I prevent ffmpeg from suspending with a message like <em class="emph">suspended (tty output)</em>?</h3>
<p>If you run ffmpeg in the background, you may find that its process suspends.
There may be a message like <em class="emph">suspended (tty output)</em>. The question is how
to prevent the process from being suspended.
</p>
<p>For example:
</p>
<div class="example">
<pre class="example-preformatted">% ffmpeg -i INPUT OUTPUT &amp;&gt; ~/tmp/log.txt &amp;
[1] 93352
%
[1] + suspended (tty output) ffmpeg -i INPUT OUTPUT &amp;&gt;
</pre></div>
<p>The message &quot;tty output&quot; notwithstanding, the problem here is that
ffmpeg normally checks the console input when it runs. The operating system
detects this, and suspends the process until you can bring it to the
foreground and attend to it.
</p>
<p>The solution is to use the right techniques to tell ffmpeg not to consult
console input. You can use the
<a class="url" href="ffmpeg.html#stdin-option"><code class="code">-nostdin</code> option</a>,
or redirect standard input with <code class="code">&lt; /dev/null</code>.
See FAQ
<a class="ref" href="#background-task"><em class="emph">How do I run ffmpeg as a background task?</em></a>
for details.
</p>
</div>
</div>
<div class="chapter-level-extent" id="Development">
<h2 class="chapter">4 Development</h2>
<ul class="mini-toc">
<li><a href="#Are-there-examples-illustrating-how-to-use-the-FFmpeg-libraries_002c-particularly-libavcodec-and-libavformat_003f" accesskey="1">Are there examples illustrating how to use the FFmpeg libraries, particularly libavcodec and libavformat?</a></li>
<li><a href="#Can-you-support-my-C-compiler-XXX_003f" accesskey="2">Can you support my C compiler XXX?</a></li>
<li><a href="#Is-Microsoft-Visual-C_002b_002b-supported_003f" accesskey="3">Is Microsoft Visual C++ supported?</a></li>
<li><a href="#Can-you-add-automake_002c-libtool-or-autoconf-support_003f" accesskey="4">Can you add automake, libtool or autoconf support?</a></li>
<li><a href="#Why-not-rewrite-FFmpeg-in-object_002doriented-C_002b_002b_003f" accesskey="5">Why not rewrite FFmpeg in object-oriented C++?</a></li>
<li><a href="#Why-are-the-ffmpeg-programs-devoid-of-debugging-symbols_003f" accesskey="6">Why are the ffmpeg programs devoid of debugging symbols?</a></li>
<li><a href="#I-do-not-like-the-LGPL_002c-can-I-contribute-code-under-the-GPL-instead_003f" accesskey="7">I do not like the LGPL, can I contribute code under the GPL instead?</a></li>
<li><a href="#I_0027m-using-FFmpeg-from-within-my-C-application-but-the-linker-complains-about-missing-symbols-from-the-libraries-themselves_002e" accesskey="8">I&rsquo;m using FFmpeg from within my C application but the linker complains about missing symbols from the libraries themselves.</a></li>
<li><a href="#I_0027m-using-FFmpeg-from-within-my-C_002b_002b-application-but-the-linker-complains-about-missing-symbols-which-seem-to-be-available_002e" accesskey="9">I&rsquo;m using FFmpeg from within my C++ application but the linker complains about missing symbols which seem to be available.</a></li>
<li><a href="#I_0027m-using-libavutil-from-within-my-C_002b_002b-application-but-the-compiler-complains-about-_0027UINT64_005fC_0027-was-not-declared-in-this-scope">I&rsquo;m using libavutil from within my C++ application but the compiler complains about &rsquo;UINT64_C&rsquo; was not declared in this scope</a></li>
<li><a href="#I-have-a-file-in-memory-_002f-a-API-different-from-_002aopen_002f_002aread_002f-libc-how-do-I-use-it-with-libavformat_003f">I have a file in memory / a API different from *open/*read/ libc how do I use it with libavformat?</a></li>
<li><a href="#Where-is-the-documentation-about-ffv1_002c-msmpeg4_002c-asv1_002c-4xm_003f">Where is the documentation about ffv1, msmpeg4, asv1, 4xm?</a></li>
<li><a href="#How-do-I-feed-H_002e263_002dRTP-_0028and-other-codecs-in-RTP_0029-to-libavcodec_003f">How do I feed H.263-RTP (and other codecs in RTP) to libavcodec?</a></li>
<li><a href="#AVStream_002er_005fframe_005frate-is-wrong_002c-it-is-much-larger-than-the-frame-rate_002e">AVStream.r_frame_rate is wrong, it is much larger than the frame rate.</a></li>
<li><a href="#Why-is-make-fate-not-running-all-tests_003f">Why is <code class="code">make fate</code> not running all tests?</a></li>
<li><a href="#Why-is-make-fate-not-finding-the-samples_003f">Why is <code class="code">make fate</code> not finding the samples?</a></li>
</ul>
<div class="section-level-extent" id="Are-there-examples-illustrating-how-to-use-the-FFmpeg-libraries_002c-particularly-libavcodec-and-libavformat_003f">
<h3 class="section">4.1 Are there examples illustrating how to use the FFmpeg libraries, particularly libavcodec and libavformat?</h3>
<p>Yes. Check the <samp class="file">doc/examples</samp> directory in the source
repository, also available online at:
<a class="url" href="https://github.com/FFmpeg/FFmpeg/tree/master/doc/examples">https://github.com/FFmpeg/FFmpeg/tree/master/doc/examples</a>.
</p>
<p>Examples are also installed by default, usually in
<code class="code">$PREFIX/share/ffmpeg/examples</code>.
</p>
<p>Also you may read the Developers Guide of the FFmpeg documentation. Alternatively,
examine the source code for one of the many open source projects that
already incorporate FFmpeg at (<a class="url" href="projects.html">projects.html</a>).
</p>
</div>
<div class="section-level-extent" id="Can-you-support-my-C-compiler-XXX_003f">
<h3 class="section">4.2 Can you support my C compiler XXX?</h3>
<p>It depends. If your compiler is C99-compliant, then patches to support
it are likely to be welcome if they do not pollute the source code
with <code class="code">#ifdef</code>s related to the compiler.
</p>
</div>
<div class="section-level-extent" id="Is-Microsoft-Visual-C_002b_002b-supported_003f">
<h3 class="section">4.3 Is Microsoft Visual C++ supported?</h3>
<p>Yes. Please see the <a class="uref" href="platform.html">Microsoft Visual C++</a>
section in the FFmpeg documentation.
</p>
</div>
<div class="section-level-extent" id="Can-you-add-automake_002c-libtool-or-autoconf-support_003f">
<h3 class="section">4.4 Can you add automake, libtool or autoconf support?</h3>
<p>No. These tools are too bloated and they complicate the build.
</p>
</div>
<div class="section-level-extent" id="Why-not-rewrite-FFmpeg-in-object_002doriented-C_002b_002b_003f">
<h3 class="section">4.5 Why not rewrite FFmpeg in object-oriented C++?</h3>
<p>FFmpeg is already organized in a highly modular manner and does not need to
be rewritten in a formal object language. Further, many of the developers
favor straight C; it works for them. For more arguments on this matter,
read <a class="uref" href="https://web.archive.org/web/20111004021423/http://kernel.org/pub/linux/docs/lkml/#s15">&quot;Programming Religion&quot;</a>.
</p>
</div>
<div class="section-level-extent" id="Why-are-the-ffmpeg-programs-devoid-of-debugging-symbols_003f">
<h3 class="section">4.6 Why are the ffmpeg programs devoid of debugging symbols?</h3>
<p>The build process creates <code class="command">ffmpeg_g</code>, <code class="command">ffplay_g</code>, etc. which
contain full debug information. Those binaries are stripped to create
<code class="command">ffmpeg</code>, <code class="command">ffplay</code>, etc. If you need the debug information, use
the *_g versions.
</p>
</div>
<div class="section-level-extent" id="I-do-not-like-the-LGPL_002c-can-I-contribute-code-under-the-GPL-instead_003f">
<h3 class="section">4.7 I do not like the LGPL, can I contribute code under the GPL instead?</h3>
<p>Yes, as long as the code is optional and can easily and cleanly be placed
under #if CONFIG_GPL without breaking anything. So, for example, a new codec
or filter would be OK under GPL while a bug fix to LGPL code would not.
</p>
</div>
<div class="section-level-extent" id="I_0027m-using-FFmpeg-from-within-my-C-application-but-the-linker-complains-about-missing-symbols-from-the-libraries-themselves_002e">
<h3 class="section">4.8 I&rsquo;m using FFmpeg from within my C application but the linker complains about missing symbols from the libraries themselves.</h3>
<p>FFmpeg builds static libraries by default. In static libraries, dependencies
are not handled. That has two consequences. First, you must specify the
libraries in dependency order: <code class="code">-lavdevice</code> must come before
<code class="code">-lavformat</code>, <code class="code">-lavutil</code> must come after everything else, etc.
Second, external libraries that are used in FFmpeg have to be specified too.
</p>
<p>An easy way to get the full list of required libraries in dependency order
is to use <code class="code">pkg-config</code>.
</p>
<div class="example">
<pre class="example-preformatted">c99 -o program program.c $(pkg-config --cflags --libs libavformat libavcodec)
</pre></div>
<p>See <samp class="file">doc/example/Makefile</samp> and <samp class="file">doc/example/pc-uninstalled</samp> for
more details.
</p>
</div>
<div class="section-level-extent" id="I_0027m-using-FFmpeg-from-within-my-C_002b_002b-application-but-the-linker-complains-about-missing-symbols-which-seem-to-be-available_002e">
<h3 class="section">4.9 I&rsquo;m using FFmpeg from within my C++ application but the linker complains about missing symbols which seem to be available.</h3>
<p>FFmpeg is a pure C project, so to use the libraries within your C++ application
you need to explicitly state that you are using a C library. You can do this by
encompassing your FFmpeg includes using <code class="code">extern &quot;C&quot;</code>.
</p>
<p>See <a class="url" href="http://www.parashift.com/c++-faq-lite/mixing-c-and-cpp.html#faq-32.3">http://www.parashift.com/c++-faq-lite/mixing-c-and-cpp.html#faq-32.3</a>
</p>
</div>
<div class="section-level-extent" id="I_0027m-using-libavutil-from-within-my-C_002b_002b-application-but-the-compiler-complains-about-_0027UINT64_005fC_0027-was-not-declared-in-this-scope">
<h3 class="section">4.10 I&rsquo;m using libavutil from within my C++ application but the compiler complains about &rsquo;UINT64_C&rsquo; was not declared in this scope</h3>
<p>FFmpeg is a pure C project using C99 math features, in order to enable C++
to use them you have to append -D__STDC_CONSTANT_MACROS to your CXXFLAGS
</p>
</div>
<div class="section-level-extent" id="I-have-a-file-in-memory-_002f-a-API-different-from-_002aopen_002f_002aread_002f-libc-how-do-I-use-it-with-libavformat_003f">
<h3 class="section">4.11 I have a file in memory / a API different from *open/*read/ libc how do I use it with libavformat?</h3>
<p>You have to create a custom AVIOContext using <code class="code">avio_alloc_context</code>,
see <samp class="file">libavformat/aviobuf.c</samp> in FFmpeg and <samp class="file">libmpdemux/demux_lavf.c</samp> in MPlayer or MPlayer2 sources.
</p>
</div>
<div class="section-level-extent" id="Where-is-the-documentation-about-ffv1_002c-msmpeg4_002c-asv1_002c-4xm_003f">
<h3 class="section">4.12 Where is the documentation about ffv1, msmpeg4, asv1, 4xm?</h3>
<p>see <a class="url" href="https://www.ffmpeg.org/~michael/">https://www.ffmpeg.org/~michael/</a>
</p>
</div>
<div class="section-level-extent" id="How-do-I-feed-H_002e263_002dRTP-_0028and-other-codecs-in-RTP_0029-to-libavcodec_003f">
<h3 class="section">4.13 How do I feed H.263-RTP (and other codecs in RTP) to libavcodec?</h3>
<p>Even if peculiar since it is network oriented, RTP is a container like any
other. You have to <em class="emph">demux</em> RTP before feeding the payload to libavcodec.
In this specific case please look at RFC 4629 to see how it should be done.
</p>
</div>
<div class="section-level-extent" id="AVStream_002er_005fframe_005frate-is-wrong_002c-it-is-much-larger-than-the-frame-rate_002e">
<h3 class="section">4.14 AVStream.r_frame_rate is wrong, it is much larger than the frame rate.</h3>
<p><code class="code">r_frame_rate</code> is NOT the average frame rate, it is the smallest frame rate
that can accurately represent all timestamps. So no, it is not
wrong if it is larger than the average!
For example, if you have mixed 25 and 30 fps content, then <code class="code">r_frame_rate</code>
will be 150 (it is the least common multiple).
If you are looking for the average frame rate, see <code class="code">AVStream.avg_frame_rate</code>.
</p>
</div>
<div class="section-level-extent" id="Why-is-make-fate-not-running-all-tests_003f">
<h3 class="section">4.15 Why is <code class="code">make fate</code> not running all tests?</h3>
<p>Make sure you have the fate-suite samples and the <code class="code">SAMPLES</code> Make variable
or <code class="code">FATE_SAMPLES</code> environment variable or the <code class="code">--samples</code>
<code class="command">configure</code> option is set to the right path.
</p>
</div>
<div class="section-level-extent" id="Why-is-make-fate-not-finding-the-samples_003f">
<h3 class="section">4.16 Why is <code class="code">make fate</code> not finding the samples?</h3>
<p>Do you happen to have a <code class="code">~</code> character in the samples path to indicate a
home directory? The value is used in ways where the shell cannot expand it,
causing FATE to not find files. Just replace <code class="code">~</code> by the full path.
</p>
</div>
</div>
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<h2 class="contents-heading">Table of Contents</h2>
<div class="contents">
<ul class="toc-numbered-mark">
<li><a id="toc-Introduction" href="#Introduction">1 Introduction</a></li>
<li><a id="toc-Using-FATE-from-your-FFmpeg-source-directory" href="#Using-FATE-from-your-FFmpeg-source-directory">2 Using FATE from your FFmpeg source directory</a></li>
<li><a id="toc-Submitting-the-results-to-the-FFmpeg-result-aggregation-server" href="#Submitting-the-results-to-the-FFmpeg-result-aggregation-server">3 Submitting the results to the FFmpeg result aggregation server</a></li>
<li><a id="toc-Uploading-new-samples-to-the-fate-suite" href="#Uploading-new-samples-to-the-fate-suite">4 Uploading new samples to the fate suite</a></li>
<li><a id="toc-FATE-makefile-targets-and-variables" href="#FATE-makefile-targets-and-variables">5 FATE makefile targets and variables</a>
<ul class="toc-numbered-mark">
<li><a id="toc-Makefile-targets" href="#Makefile-targets">5.1 Makefile targets</a></li>
<li><a id="toc-Makefile-variables" href="#Makefile-variables">5.2 Makefile variables</a></li>
<li><a id="toc-Examples" href="#Examples">5.3 Examples</a></li>
</ul></li>
</ul>
</div>
</div>
<div class="chapter-level-extent" id="Introduction">
<h2 class="chapter">1 Introduction</h2>
<p>FATE is an extended regression suite on the client-side and a means
for results aggregation and presentation on the server-side.
</p>
<p>The first part of this document explains how you can use FATE from
your FFmpeg source directory to test your ffmpeg binary. The second
part describes how you can run FATE to submit the results to FFmpeg&rsquo;s
FATE server.
</p>
<p>In any way you can have a look at the publicly viewable FATE results
by visiting this website:
</p>
<p><a class="url" href="http://fate.ffmpeg.org/">http://fate.ffmpeg.org/</a>
</p>
<p>This is especially recommended for all people contributing source
code to FFmpeg, as it can be seen if some test on some platform broke
with their recent contribution. This usually happens on the platforms
the developers could not test on.
</p>
<p>The second part of this document describes how you can run FATE to
submit your results to FFmpeg&rsquo;s FATE server. If you want to submit your
results be sure to check that your combination of CPU, OS and compiler
is not already listed on the above mentioned website.
</p>
<p>In the third part you can find a comprehensive listing of FATE makefile
targets and variables.
</p>
</div>
<div class="chapter-level-extent" id="Using-FATE-from-your-FFmpeg-source-directory">
<h2 class="chapter">2 Using FATE from your FFmpeg source directory</h2>
<p>If you want to run FATE on your machine you need to have the samples
in place. You can get the samples via the build target fate-rsync.
Use this command from the top-level source directory:
</p>
<div class="example">
<pre class="example-preformatted">make fate-rsync SAMPLES=fate-suite/
make fate SAMPLES=fate-suite/
</pre></div>
<p>The above commands set the samples location by passing a makefile
variable via command line. It is also possible to set the samples
location at source configuration time by invoking configure with
<samp class="option">--samples=&lt;path to the samples directory&gt;</samp>. Afterwards you can
invoke the makefile targets without setting the <var class="var">SAMPLES</var> makefile
variable. This is illustrated by the following commands:
</p>
<div class="example">
<pre class="example-preformatted">./configure --samples=fate-suite/
make fate-rsync
make fate
</pre></div>
<p>Yet another way to tell FATE about the location of the sample
directory is by making sure the environment variable FATE_SAMPLES
contains the path to your samples directory. This can be achieved
by e.g. putting that variable in your shell profile or by setting
it in your interactive session.
</p>
<div class="example">
<pre class="example-preformatted">FATE_SAMPLES=fate-suite/ make fate
</pre></div>
<div class="float">
<p>Do not put a &rsquo;~&rsquo; character in the samples path to indicate a home
directory. Because of shell nuances, this will cause FATE to fail.
</p><div class="type-number-float"><p><strong class="strong">NOTE
</strong></p></div></div>
<p>To get the complete list of tests, run the command:
</p><div class="example">
<pre class="example-preformatted">make fate-list
</pre></div>
<p>You can specify a subset of tests to run by specifying the
corresponding elements from the list with the <code class="code">fate-</code> prefix,
e.g. as in:
</p><div class="example">
<pre class="example-preformatted">make fate-ffprobe_compact fate-ffprobe_xml
</pre></div>
<p>This makes it easier to run a few tests in case of failure without
running the complete test suite.
</p>
<p>To use a custom wrapper to run the test, pass <samp class="option">--target-exec</samp> to
<code class="command">configure</code> or set the <var class="var">TARGET_EXEC</var> Make variable.
</p>
</div>
<div class="chapter-level-extent" id="Submitting-the-results-to-the-FFmpeg-result-aggregation-server">
<h2 class="chapter">3 Submitting the results to the FFmpeg result aggregation server</h2>
<p>To submit your results to the server you should run fate through the
shell script <samp class="file">tests/fate.sh</samp> from the FFmpeg sources. This script needs
to be invoked with a configuration file as its first argument.
</p>
<div class="example">
<pre class="example-preformatted">tests/fate.sh /path/to/fate_config
</pre></div>
<p>A configuration file template with comments describing the individual
configuration variables can be found at <samp class="file">doc/fate_config.sh.template</samp>.
</p>
<p>The mentioned configuration template is also available here:
</p><pre class="verbatim">slot= # some unique identifier
repo=git://source.ffmpeg.org/ffmpeg.git # the source repository
#branch=release/2.6 # the branch to test
samples= # path to samples directory
workdir= # directory in which to do all the work
#fate_recv=&quot;ssh -T fate@fate.ffmpeg.org&quot; # command to submit report
comment= # optional description
build_only= # set to &quot;yes&quot; for a compile-only instance that skips tests
ignore_tests=
# the following are optional and map to configure options
arch=
cpu=
cross_prefix=
as=
cc=
ld=
target_os=
sysroot=
target_exec=
target_path=
target_samples=
extra_cflags=
extra_ldflags=
extra_libs=
extra_conf= # extra configure options not covered above
#make= # name of GNU make if not 'make'
makeopts= # extra options passed to 'make'
#makeopts_fate= # extra options passed to 'make' when running tests,
# defaulting to makeopts above if this is not set
#tar= # command to create a tar archive from its arguments on stdout,
# defaults to 'tar c'
</pre>
<p>Create a configuration that suits your needs, based on the configuration
template. The <code class="env">slot</code> configuration variable can be any string that is not
yet used, but it is suggested that you name it adhering to the following
pattern &lsquo;<samp class="samp"><var class="var">arch</var>-<var class="var">os</var>-<var class="var">compiler</var>-<var class="var">compiler version</var></samp>&rsquo;. The
configuration file itself will be sourced in a shell script, therefore all
shell features may be used. This enables you to setup the environment as you
need it for your build.
</p>
<p>For your first test runs the <code class="env">fate_recv</code> variable should be empty or
commented out. This will run everything as normal except that it will omit
the submission of the results to the server. The following files should be
present in $workdir as specified in the configuration file:
</p>
<ul class="itemize mark-bullet">
<li>configure.log
</li><li>compile.log
</li><li>test.log
</li><li>report
</li><li>version
</li></ul>
<p>When you have everything working properly you can create an SSH key pair
and send the public key to the FATE server administrator who can be contacted
at the email address <a class="email" href="mailto:fate-admin@ffmpeg.org">fate-admin@ffmpeg.org</a>.
</p>
<p>Configure your SSH client to use public key authentication with that key
when connecting to the FATE server. Also do not forget to check the identity
of the server and to accept its host key. This can usually be achieved by
running your SSH client manually and killing it after you accepted the key.
The FATE server&rsquo;s fingerprint is:
</p>
<dl class="table">
<dt>&lsquo;<samp class="samp">RSA</samp>&rsquo;</dt>
<dd><p>d3:f1:83:97:a4:75:2b:a6:fb:d6:e8:aa:81:93:97:51
</p></dd>
<dt>&lsquo;<samp class="samp">ECDSA</samp>&rsquo;</dt>
<dd><p>76:9f:68:32:04:1e:d5:d4:ec:47:3f:dc:fc:18:17:86
</p></dd>
</dl>
<p>If you have problems connecting to the FATE server, it may help to try out
the <code class="command">ssh</code> command with one or more <samp class="option">-v</samp> options. You should
get detailed output concerning your SSH configuration and the authentication
process.
</p>
<p>The only thing left is to automate the execution of the fate.sh script and
the synchronisation of the samples directory.
</p>
</div>
<div class="chapter-level-extent" id="Uploading-new-samples-to-the-fate-suite">
<h2 class="chapter">4 Uploading new samples to the fate suite</h2>
<p>If you need a sample uploaded send a mail to samples-request.
</p>
<p>This is for developers who have an account on the fate suite server.
If you upload new samples, please make sure they are as small as possible,
space on each client, network bandwidth and so on benefit from smaller test cases.
Also keep in mind older checkouts use existing sample files, that means in
practice generally do not replace, remove or overwrite files as it likely would
break older checkouts or releases.
Also all needed samples for a commit should be uploaded, ideally 24
hours, before the push.
If you need an account for frequently uploading samples or you wish to help
others by doing that send a mail to ffmpeg-devel.
</p>
<div class="example">
<pre class="example-preformatted">#First update your local samples copy:
rsync -vauL --chmod=Dg+s,Duo+x,ug+rw,o+r,o-w,+X fate-suite.ffmpeg.org:/home/samples/fate-suite/ ~/fate-suite
#Then do a dry run checking what would be uploaded:
rsync -vanL --no-g --chmod=Dg+s,Duo+x,ug+rw,o+r,o-w,+X ~/fate-suite/ fate-suite.ffmpeg.org:/home/samples/fate-suite
#Upload the files:
rsync -vaL --no-g --chmod=Dg+s,Duo+x,ug+rw,o+r,o-w,+X ~/fate-suite/ fate-suite.ffmpeg.org:/home/samples/fate-suite
</pre></div>
</div>
<div class="chapter-level-extent" id="FATE-makefile-targets-and-variables">
<h2 class="chapter">5 FATE makefile targets and variables</h2>
<ul class="mini-toc">
<li><a href="#Makefile-targets" accesskey="1">Makefile targets</a></li>
<li><a href="#Makefile-variables" accesskey="2">Makefile variables</a></li>
<li><a href="#Examples" accesskey="3">Examples</a></li>
</ul>
<div class="section-level-extent" id="Makefile-targets">
<h3 class="section">5.1 Makefile targets</h3>
<dl class="table">
<dt><samp class="option">fate-rsync</samp></dt>
<dd><p>Download/synchronize sample files to the configured samples directory.
</p>
</dd>
<dt><samp class="option">fate-list</samp></dt>
<dd><p>Will list all fate/regression test targets.
</p>
</dd>
<dt><samp class="option">fate</samp></dt>
<dd><p>Run the FATE test suite (requires the fate-suite dataset).
</p></dd>
</dl>
</div>
<div class="section-level-extent" id="Makefile-variables">
<h3 class="section">5.2 Makefile variables</h3>
<dl class="table">
<dt><code class="env">V</code></dt>
<dd><p>Verbosity level, can be set to 0, 1 or 2.
</p><ul class="itemize mark-bullet">
<li>0: show just the test arguments
</li><li>1: show just the command used in the test
</li><li>2: show everything
</li></ul>
</dd>
<dt><code class="env">SAMPLES</code></dt>
<dd><p>Specify or override the path to the FATE samples at make time, it has a
meaning only while running the regression tests.
</p>
</dd>
<dt><code class="env">THREADS</code></dt>
<dd><p>Specify how many threads to use while running regression tests, it is
quite useful to detect thread-related regressions.
</p>
<p>This variable may be set to the string &quot;random&quot;, optionally followed by a
number, like &quot;random99&quot;, This will cause each test to use a random number of
threads. If a number is specified, it is used as a maximum number of threads,
otherwise 16 is the maximum.
</p>
<p>In case a test fails, the thread count used for it will be written into the
errfile.
</p>
</dd>
<dt><code class="env">THREAD_TYPE</code></dt>
<dd><p>Specify which threading strategy test, either &lsquo;<samp class="samp">slice</samp>&rsquo; or &lsquo;<samp class="samp">frame</samp>&rsquo;,
by default &lsquo;<samp class="samp">slice+frame</samp>&rsquo;
</p>
</dd>
<dt><code class="env">CPUFLAGS</code></dt>
<dd><p>Specify CPU flags.
</p>
</dd>
<dt><code class="env">TARGET_EXEC</code></dt>
<dd><p>Specify or override the wrapper used to run the tests.
The <code class="env">TARGET_EXEC</code> option provides a way to run FATE wrapped in
<code class="command">valgrind</code>, <code class="command">qemu-user</code> or <code class="command">wine</code> or on remote targets
through <code class="command">ssh</code>.
</p>
</dd>
<dt><code class="env">GEN</code></dt>
<dd><p>Set to &lsquo;<samp class="samp">1</samp>&rsquo; to generate the missing or mismatched references.
</p>
</dd>
<dt><code class="env">HWACCEL</code></dt>
<dd><p>Specify which hardware acceleration to use while running regression tests,
by default &lsquo;<samp class="samp">none</samp>&rsquo; is used.
</p>
</dd>
<dt><code class="env">KEEP</code></dt>
<dd><p>Set to &lsquo;<samp class="samp">1</samp>&rsquo; to keep temp files generated by fate test(s) when test is successful.
Default is &lsquo;<samp class="samp">0</samp>&rsquo;, which removes these files. Files are always kept when a test
fails.
</p>
</dd>
</dl>
</div>
<div class="section-level-extent" id="Examples">
<h3 class="section">5.3 Examples</h3>
<div class="example">
<pre class="example-preformatted">make V=1 SAMPLES=/var/fate/samples THREADS=2 CPUFLAGS=mmx fate
</pre></div>
</div>
</div>
</div>
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<h2 class="contents-heading">Table of Contents</h2>
<div class="contents">
<ul class="toc-numbered-mark">
<li><a id="toc-Description" href="#Description">1 Description</a></li>
<li><a id="toc-Resampler-Options" href="#Resampler-Options">2 Resampler Options</a></li>
<li><a id="toc-See-Also" href="#See-Also">3 See Also</a></li>
<li><a id="toc-Authors" href="#Authors">4 Authors</a></li>
</ul>
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<div class="chapter-level-extent" id="Description">
<h2 class="chapter">1 Description</h2>
<p>The FFmpeg resampler provides a high-level interface to the
libswresample library audio resampling utilities. In particular it
allows one to perform audio resampling, audio channel layout rematrixing,
and convert audio format and packing layout.
</p>
</div>
<div class="chapter-level-extent" id="Resampler-Options">
<h2 class="chapter">2 Resampler Options</h2>
<p>The audio resampler supports the following named options.
</p>
<p>Options may be set by specifying -<var class="var">option</var> <var class="var">value</var> in the
FFmpeg tools, <var class="var">option</var>=<var class="var">value</var> for the aresample filter,
by setting the value explicitly in the
<code class="code">SwrContext</code> options or using the <samp class="file">libavutil/opt.h</samp> API for
programmatic use.
</p>
<dl class="table">
<dt><samp class="option">uchl, used_chlayout</samp></dt>
<dd><p>Set used input channel layout. Default is unset. This option is
only used for special remapping.
</p>
</dd>
<dt><samp class="option">isr, in_sample_rate</samp></dt>
<dd><p>Set the input sample rate. Default value is 0.
</p>
</dd>
<dt><samp class="option">osr, out_sample_rate</samp></dt>
<dd><p>Set the output sample rate. Default value is 0.
</p>
</dd>
<dt><samp class="option">isf, in_sample_fmt</samp></dt>
<dd><p>Specify the input sample format. It is set by default to <code class="code">none</code>.
</p>
</dd>
<dt><samp class="option">osf, out_sample_fmt</samp></dt>
<dd><p>Specify the output sample format. It is set by default to <code class="code">none</code>.
</p>
</dd>
<dt><samp class="option">tsf, internal_sample_fmt</samp></dt>
<dd><p>Set the internal sample format. Default value is <code class="code">none</code>.
This will automatically be chosen when it is not explicitly set.
</p>
</dd>
<dt><samp class="option">ichl, in_chlayout</samp></dt>
<dt><samp class="option">ochl, out_chlayout</samp></dt>
<dd><p>Set the input/output channel layout.
</p>
<p>See <a data-manual="ffmpeg-utils" href="ffmpeg-utils.html#channel-layout-syntax">(ffmpeg-utils)the Channel Layout section in the ffmpeg-utils(1) manual</a>
for the required syntax.
</p>
</dd>
<dt><samp class="option">clev, center_mix_level</samp></dt>
<dd><p>Set the center mix level. It is a value expressed in deciBel, and must be
in the interval [-32,32].
</p>
</dd>
<dt><samp class="option">slev, surround_mix_level</samp></dt>
<dd><p>Set the surround mix level. It is a value expressed in deciBel, and must
be in the interval [-32,32].
</p>
</dd>
<dt><samp class="option">lfe_mix_level</samp></dt>
<dd><p>Set LFE mix into non LFE level. It is used when there is a LFE input but no
LFE output. It is a value expressed in deciBel, and must
be in the interval [-32,32].
</p>
</dd>
<dt><samp class="option">rmvol, rematrix_volume</samp></dt>
<dd><p>Set rematrix volume. Default value is 1.0.
</p>
</dd>
<dt><samp class="option">rematrix_maxval</samp></dt>
<dd><p>Set maximum output value for rematrixing.
This can be used to prevent clipping vs. preventing volume reduction.
A value of 1.0 prevents clipping.
</p>
</dd>
<dt><samp class="option">flags, swr_flags</samp></dt>
<dd><p>Set flags used by the converter. Default value is 0.
</p>
<p>It supports the following individual flags:
</p><dl class="table">
<dt><samp class="option">res</samp></dt>
<dd><p>force resampling, this flag forces resampling to be used even when the
input and output sample rates match.
</p></dd>
</dl>
</dd>
<dt><samp class="option">dither_scale</samp></dt>
<dd><p>Set the dither scale. Default value is 1.
</p>
</dd>
<dt><samp class="option">dither_method</samp></dt>
<dd><p>Set dither method. Default value is 0.
</p>
<p>Supported values:
</p><dl class="table">
<dt>&lsquo;<samp class="samp">rectangular</samp>&rsquo;</dt>
<dd><p>select rectangular dither
</p></dd>
<dt>&lsquo;<samp class="samp">triangular</samp>&rsquo;</dt>
<dd><p>select triangular dither
</p></dd>
<dt>&lsquo;<samp class="samp">triangular_hp</samp>&rsquo;</dt>
<dd><p>select triangular dither with high pass
</p></dd>
<dt>&lsquo;<samp class="samp">lipshitz</samp>&rsquo;</dt>
<dd><p>select Lipshitz noise shaping dither.
</p></dd>
<dt>&lsquo;<samp class="samp">shibata</samp>&rsquo;</dt>
<dd><p>select Shibata noise shaping dither.
</p></dd>
<dt>&lsquo;<samp class="samp">low_shibata</samp>&rsquo;</dt>
<dd><p>select low Shibata noise shaping dither.
</p></dd>
<dt>&lsquo;<samp class="samp">high_shibata</samp>&rsquo;</dt>
<dd><p>select high Shibata noise shaping dither.
</p></dd>
<dt>&lsquo;<samp class="samp">f_weighted</samp>&rsquo;</dt>
<dd><p>select f-weighted noise shaping dither
</p></dd>
<dt>&lsquo;<samp class="samp">modified_e_weighted</samp>&rsquo;</dt>
<dd><p>select modified-e-weighted noise shaping dither
</p></dd>
<dt>&lsquo;<samp class="samp">improved_e_weighted</samp>&rsquo;</dt>
<dd><p>select improved-e-weighted noise shaping dither
</p>
</dd>
</dl>
</dd>
<dt><samp class="option">resampler</samp></dt>
<dd><p>Set resampling engine. Default value is swr.
</p>
<p>Supported values:
</p><dl class="table">
<dt>&lsquo;<samp class="samp">swr</samp>&rsquo;</dt>
<dd><p>select the native SW Resampler; filter options precision and cheby are not
applicable in this case.
</p></dd>
<dt>&lsquo;<samp class="samp">soxr</samp>&rsquo;</dt>
<dd><p>select the SoX Resampler (where available); compensation, and filter options
filter_size, phase_shift, exact_rational, filter_type &amp; kaiser_beta, are not
applicable in this case.
</p></dd>
</dl>
</dd>
<dt><samp class="option">filter_size</samp></dt>
<dd><p>For swr only, set resampling filter size, default value is 32.
</p>
</dd>
<dt><samp class="option">phase_shift</samp></dt>
<dd><p>For swr only, set resampling phase shift, default value is 10, and must be in
the interval [0,30].
</p>
</dd>
<dt><samp class="option">linear_interp</samp></dt>
<dd><p>Use linear interpolation when enabled (the default). Disable it if you want
to preserve speed instead of quality when exact_rational fails.
</p>
</dd>
<dt><samp class="option">exact_rational</samp></dt>
<dd><p>For swr only, when enabled, try to use exact phase_count based on input and
output sample rate. However, if it is larger than <code class="code">1 &lt;&lt; phase_shift</code>,
the phase_count will be <code class="code">1 &lt;&lt; phase_shift</code> as fallback. Default is enabled.
</p>
</dd>
<dt><samp class="option">cutoff</samp></dt>
<dd><p>Set cutoff frequency (swr: 6dB point; soxr: 0dB point) ratio; must be a float
value between 0 and 1. Default value is 0.97 with swr, and 0.91 with soxr
(which, with a sample-rate of 44100, preserves the entire audio band to 20kHz).
</p>
</dd>
<dt><samp class="option">precision</samp></dt>
<dd><p>For soxr only, the precision in bits to which the resampled signal will be
calculated. The default value of 20 (which, with suitable dithering, is
appropriate for a destination bit-depth of 16) gives SoX&rsquo;s &rsquo;High Quality&rsquo;; a
value of 28 gives SoX&rsquo;s &rsquo;Very High Quality&rsquo;.
</p>
</dd>
<dt><samp class="option">cheby</samp></dt>
<dd><p>For soxr only, selects passband rolloff none (Chebyshev) &amp; higher-precision
approximation for &rsquo;irrational&rsquo; ratios. Default value is 0.
</p>
</dd>
<dt><samp class="option">async</samp></dt>
<dd><p>For swr only, simple 1 parameter audio sync to timestamps using stretching,
squeezing, filling and trimming. Setting this to 1 will enable filling and
trimming, larger values represent the maximum amount in samples that the data
may be stretched or squeezed for each second.
Default value is 0, thus no compensation is applied to make the samples match
the audio timestamps.
</p>
</dd>
<dt><samp class="option">first_pts</samp></dt>
<dd><p>For swr only, assume the first pts should be this value. The time unit is 1 / sample rate.
This allows for padding/trimming at the start of stream. By default, no
assumption is made about the first frame&rsquo;s expected pts, so no padding or
trimming is done. For example, this could be set to 0 to pad the beginning with
silence if an audio stream starts after the video stream or to trim any samples
with a negative pts due to encoder delay.
</p>
</dd>
<dt><samp class="option">min_comp</samp></dt>
<dd><p>For swr only, set the minimum difference between timestamps and audio data (in
seconds) to trigger stretching/squeezing/filling or trimming of the
data to make it match the timestamps. The default is that
stretching/squeezing/filling and trimming is disabled
(<samp class="option">min_comp</samp> = <code class="code">FLT_MAX</code>).
</p>
</dd>
<dt><samp class="option">min_hard_comp</samp></dt>
<dd><p>For swr only, set the minimum difference between timestamps and audio data (in
seconds) to trigger adding/dropping samples to make it match the
timestamps. This option effectively is a threshold to select between
hard (trim/fill) and soft (squeeze/stretch) compensation. Note that
all compensation is by default disabled through <samp class="option">min_comp</samp>.
The default is 0.1.
</p>
</dd>
<dt><samp class="option">comp_duration</samp></dt>
<dd><p>For swr only, set duration (in seconds) over which data is stretched/squeezed
to make it match the timestamps. Must be a non-negative double float value,
default value is 1.0.
</p>
</dd>
<dt><samp class="option">max_soft_comp</samp></dt>
<dd><p>For swr only, set maximum factor by which data is stretched/squeezed to make it
match the timestamps. Must be a non-negative double float value, default value
is 0.
</p>
</dd>
<dt><samp class="option">matrix_encoding</samp></dt>
<dd><p>Select matrixed stereo encoding.
</p>
<p>It accepts the following values:
</p><dl class="table">
<dt>&lsquo;<samp class="samp">none</samp>&rsquo;</dt>
<dd><p>select none
</p></dd>
<dt>&lsquo;<samp class="samp">dolby</samp>&rsquo;</dt>
<dd><p>select Dolby
</p></dd>
<dt>&lsquo;<samp class="samp">dplii</samp>&rsquo;</dt>
<dd><p>select Dolby Pro Logic II
</p></dd>
</dl>
<p>Default value is <code class="code">none</code>.
</p>
</dd>
<dt><samp class="option">filter_type</samp></dt>
<dd><p>For swr only, select resampling filter type. This only affects resampling
operations.
</p>
<p>It accepts the following values:
</p><dl class="table">
<dt>&lsquo;<samp class="samp">cubic</samp>&rsquo;</dt>
<dd><p>select cubic
</p></dd>
<dt>&lsquo;<samp class="samp">blackman_nuttall</samp>&rsquo;</dt>
<dd><p>select Blackman Nuttall windowed sinc
</p></dd>
<dt>&lsquo;<samp class="samp">kaiser</samp>&rsquo;</dt>
<dd><p>select Kaiser windowed sinc
</p></dd>
</dl>
</dd>
<dt><samp class="option">kaiser_beta</samp></dt>
<dd><p>For swr only, set Kaiser window beta value. Must be a double float value in the
interval [2,16], default value is 9.
</p>
</dd>
<dt><samp class="option">output_sample_bits</samp></dt>
<dd><p>For swr only, set number of used output sample bits for dithering. Must be an integer in the
interval [0,64], default value is 0, which means it&rsquo;s not used.
</p>
</dd>
</dl>
</div>
<div class="chapter-level-extent" id="See-Also">
<h2 class="chapter">3 See Also</h2>
<p><a class="url" href="ffmpeg.html">ffmpeg</a>, <a class="url" href="ffplay.html">ffplay</a>, <a class="url" href="ffprobe.html">ffprobe</a>,
<a class="url" href="libswresample.html">libswresample</a>
</p>
</div>
<div class="chapter-level-extent" id="Authors">
<h2 class="chapter">4 Authors</h2>
<p>The FFmpeg developers.
</p>
<p>For details about the authorship, see the Git history of the project
(https://git.ffmpeg.org/ffmpeg), e.g. by typing the command
<code class="command">git log</code> in the FFmpeg source directory, or browsing the
online repository at <a class="url" href="https://git.ffmpeg.org/ffmpeg">https://git.ffmpeg.org/ffmpeg</a>.
</p>
<p>Maintainers for the specific components are listed in the file
<samp class="file">MAINTAINERS</samp> in the source code tree.
</p>
</div>
</div>
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<meta name="description" content="FFmpeg Scaler Documentation">
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<div class="top-level-extent" id="SEC_Top">
<div class="element-contents" id="SEC_Contents">
<h2 class="contents-heading">Table of Contents</h2>
<div class="contents">
<ul class="toc-numbered-mark">
<li><a id="toc-Description" href="#Description">1 Description</a></li>
<li><a id="toc-Scaler-Options" href="#Scaler-Options">2 Scaler Options</a></li>
<li><a id="toc-See-Also" href="#See-Also">3 See Also</a></li>
<li><a id="toc-Authors" href="#Authors">4 Authors</a></li>
</ul>
</div>
</div>
<div class="chapter-level-extent" id="Description">
<h2 class="chapter">1 Description</h2>
<p>The FFmpeg rescaler provides a high-level interface to the libswscale
library image conversion utilities. In particular it allows one to perform
image rescaling and pixel format conversion.
</p>
<a class="anchor" id="scaler_005foptions"></a></div>
<div class="chapter-level-extent" id="Scaler-Options">
<h2 class="chapter">2 Scaler Options</h2>
<p>The video scaler supports the following named options.
</p>
<p>Options may be set by specifying -<var class="var">option</var> <var class="var">value</var> in the
FFmpeg tools, with a few API-only exceptions noted below.
For programmatic use, they can be set explicitly in the
<code class="code">SwsContext</code> options or through the <samp class="file">libavutil/opt.h</samp> API.
</p>
<dl class="table">
<dd>
<a class="anchor" id="sws_005fflags"></a></dd>
<dt><samp class="option">sws_flags</samp></dt>
<dd><p>Set the scaler flags. This is also used to set the scaling
algorithm. Only a single algorithm should be selected. Default
value is &lsquo;<samp class="samp">bicubic</samp>&rsquo;.
</p>
<p>It accepts the following values:
</p><dl class="table">
<dt>&lsquo;<samp class="samp">fast_bilinear</samp>&rsquo;</dt>
<dd><p>Select fast bilinear scaling algorithm.
</p>
</dd>
<dt>&lsquo;<samp class="samp">bilinear</samp>&rsquo;</dt>
<dd><p>Select bilinear scaling algorithm.
</p>
</dd>
<dt>&lsquo;<samp class="samp">bicubic</samp>&rsquo;</dt>
<dd><p>Select bicubic scaling algorithm.
</p>
</dd>
<dt>&lsquo;<samp class="samp">experimental</samp>&rsquo;</dt>
<dd><p>Select experimental scaling algorithm.
</p>
</dd>
<dt>&lsquo;<samp class="samp">neighbor</samp>&rsquo;</dt>
<dd><p>Select nearest neighbor rescaling algorithm.
</p>
</dd>
<dt>&lsquo;<samp class="samp">area</samp>&rsquo;</dt>
<dd><p>Select averaging area rescaling algorithm.
</p>
</dd>
<dt>&lsquo;<samp class="samp">bicublin</samp>&rsquo;</dt>
<dd><p>Select bicubic scaling algorithm for the luma component, bilinear for
chroma components.
</p>
</dd>
<dt>&lsquo;<samp class="samp">gauss</samp>&rsquo;</dt>
<dd><p>Select Gaussian rescaling algorithm.
</p>
</dd>
<dt>&lsquo;<samp class="samp">sinc</samp>&rsquo;</dt>
<dd><p>Select sinc rescaling algorithm.
</p>
</dd>
<dt>&lsquo;<samp class="samp">lanczos</samp>&rsquo;</dt>
<dd><p>Select Lanczos rescaling algorithm. The default width (alpha) is 3 and can be
changed by setting <code class="code">param0</code>.
</p>
</dd>
<dt>&lsquo;<samp class="samp">spline</samp>&rsquo;</dt>
<dd><p>Select natural bicubic spline rescaling algorithm.
</p>
</dd>
<dt>&lsquo;<samp class="samp">print_info</samp>&rsquo;</dt>
<dd><p>Enable printing/debug logging.
</p>
</dd>
<dt>&lsquo;<samp class="samp">accurate_rnd</samp>&rsquo;</dt>
<dd><p>Enable accurate rounding.
</p>
</dd>
<dt>&lsquo;<samp class="samp">full_chroma_int</samp>&rsquo;</dt>
<dd><p>Enable full chroma interpolation.
</p>
</dd>
<dt>&lsquo;<samp class="samp">full_chroma_inp</samp>&rsquo;</dt>
<dd><p>Select full chroma input.
</p>
</dd>
<dt>&lsquo;<samp class="samp">bitexact</samp>&rsquo;</dt>
<dd><p>Enable bitexact output.
</p></dd>
</dl>
</dd>
<dt><samp class="option">srcw <var class="var">(API only)</var></samp></dt>
<dd><p>Set source width.
</p>
</dd>
<dt><samp class="option">srch <var class="var">(API only)</var></samp></dt>
<dd><p>Set source height.
</p>
</dd>
<dt><samp class="option">dstw <var class="var">(API only)</var></samp></dt>
<dd><p>Set destination width.
</p>
</dd>
<dt><samp class="option">dsth <var class="var">(API only)</var></samp></dt>
<dd><p>Set destination height.
</p>
</dd>
<dt><samp class="option">src_format <var class="var">(API only)</var></samp></dt>
<dd><p>Set source pixel format (must be expressed as an integer).
</p>
</dd>
<dt><samp class="option">dst_format <var class="var">(API only)</var></samp></dt>
<dd><p>Set destination pixel format (must be expressed as an integer).
</p>
</dd>
<dt><samp class="option">src_range <var class="var">(boolean)</var></samp></dt>
<dd><p>If value is set to <code class="code">1</code>, indicates source is full range. Default value is
<code class="code">0</code>, which indicates source is limited range.
</p>
</dd>
<dt><samp class="option">dst_range <var class="var">(boolean)</var></samp></dt>
<dd><p>If value is set to <code class="code">1</code>, enable full range for destination. Default value
is <code class="code">0</code>, which enables limited range.
</p>
<a class="anchor" id="sws_005fparams"></a></dd>
<dt><samp class="option">param0, param1</samp></dt>
<dd><p>Set scaling algorithm parameters. The specified values are specific of
some scaling algorithms and ignored by others. The specified values
are floating point number values.
</p>
</dd>
<dt><samp class="option">sws_dither</samp></dt>
<dd><p>Set the dithering algorithm. Accepts one of the following
values. Default value is &lsquo;<samp class="samp">auto</samp>&rsquo;.
</p>
<dl class="table">
<dt>&lsquo;<samp class="samp">auto</samp>&rsquo;</dt>
<dd><p>automatic choice
</p>
</dd>
<dt>&lsquo;<samp class="samp">none</samp>&rsquo;</dt>
<dd><p>no dithering
</p>
</dd>
<dt>&lsquo;<samp class="samp">bayer</samp>&rsquo;</dt>
<dd><p>bayer dither
</p>
</dd>
<dt>&lsquo;<samp class="samp">ed</samp>&rsquo;</dt>
<dd><p>error diffusion dither
</p>
</dd>
<dt>&lsquo;<samp class="samp">a_dither</samp>&rsquo;</dt>
<dd><p>arithmetic dither, based using addition
</p>
</dd>
<dt>&lsquo;<samp class="samp">x_dither</samp>&rsquo;</dt>
<dd><p>arithmetic dither, based using xor (more random/less apparent patterning that
a_dither).
</p>
</dd>
</dl>
</dd>
<dt><samp class="option">alphablend</samp></dt>
<dd><p>Set the alpha blending to use when the input has alpha but the output does not.
Default value is &lsquo;<samp class="samp">none</samp>&rsquo;.
</p>
<dl class="table">
<dt>&lsquo;<samp class="samp">uniform_color</samp>&rsquo;</dt>
<dd><p>Blend onto a uniform background color
</p>
</dd>
<dt>&lsquo;<samp class="samp">checkerboard</samp>&rsquo;</dt>
<dd><p>Blend onto a checkerboard
</p>
</dd>
<dt>&lsquo;<samp class="samp">none</samp>&rsquo;</dt>
<dd><p>No blending
</p>
</dd>
</dl>
</dd>
</dl>
</div>
<div class="chapter-level-extent" id="See-Also">
<h2 class="chapter">3 See Also</h2>
<p><a class="url" href="ffmpeg.html">ffmpeg</a>, <a class="url" href="ffplay.html">ffplay</a>, <a class="url" href="ffprobe.html">ffprobe</a>,
<a class="url" href="libswscale.html">libswscale</a>
</p>
</div>
<div class="chapter-level-extent" id="Authors">
<h2 class="chapter">4 Authors</h2>
<p>The FFmpeg developers.
</p>
<p>For details about the authorship, see the Git history of the project
(https://git.ffmpeg.org/ffmpeg), e.g. by typing the command
<code class="command">git log</code> in the FFmpeg source directory, or browsing the
online repository at <a class="url" href="https://git.ffmpeg.org/ffmpeg">https://git.ffmpeg.org/ffmpeg</a>.
</p>
<p>Maintainers for the specific components are listed in the file
<samp class="file">MAINTAINERS</samp> in the source code tree.
</p>
</div>
</div>
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<div class="top-level-extent" id="SEC_Top">
<div class="element-contents" id="SEC_Contents">
<h2 class="contents-heading">Table of Contents</h2>
<div class="contents">
<ul class="toc-numbered-mark">
<li><a id="toc-Synopsis" href="#Synopsis">1 Synopsis</a></li>
<li><a id="toc-Description" href="#Description">2 Description</a></li>
<li><a id="toc-Options" href="#Options">3 Options</a>
<ul class="toc-numbered-mark">
<li><a id="toc-Stream-specifiers-1" href="#Stream-specifiers-1">3.1 Stream specifiers</a></li>
<li><a id="toc-Generic-options" href="#Generic-options">3.2 Generic options</a></li>
<li><a id="toc-AVOptions" href="#AVOptions">3.3 AVOptions</a></li>
<li><a id="toc-Main-options" href="#Main-options">3.4 Main options</a></li>
<li><a id="toc-Advanced-options" href="#Advanced-options">3.5 Advanced options</a></li>
<li><a id="toc-While-playing" href="#While-playing">3.6 While playing</a></li>
</ul></li>
<li><a id="toc-See-Also" href="#See-Also">4 See Also</a></li>
<li><a id="toc-Authors" href="#Authors">5 Authors</a></li>
</ul>
</div>
</div>
<div class="chapter-level-extent" id="Synopsis">
<h2 class="chapter">1 Synopsis</h2>
<p>ffplay [<var class="var">options</var>] [<samp class="file">input_url</samp>]
</p>
</div>
<div class="chapter-level-extent" id="Description">
<h2 class="chapter">2 Description</h2>
<p>FFplay is a very simple and portable media player using the FFmpeg
libraries and the SDL library. It is mostly used as a testbed for the
various FFmpeg APIs.
</p>
</div>
<div class="chapter-level-extent" id="Options">
<h2 class="chapter">3 Options</h2>
<p>All the numerical options, if not specified otherwise, accept a string
representing a number as input, which may be followed by one of the SI
unit prefixes, for example: &rsquo;K&rsquo;, &rsquo;M&rsquo;, or &rsquo;G&rsquo;.
</p>
<p>If &rsquo;i&rsquo; is appended to the SI unit prefix, the complete prefix will be
interpreted as a unit prefix for binary multiples, which are based on
powers of 1024 instead of powers of 1000. Appending &rsquo;B&rsquo; to the SI unit
prefix multiplies the value by 8. This allows using, for example:
&rsquo;KB&rsquo;, &rsquo;MiB&rsquo;, &rsquo;G&rsquo; and &rsquo;B&rsquo; as number suffixes.
</p>
<p>Options which do not take arguments are boolean options, and set the
corresponding value to true. They can be set to false by prefixing
the option name with &quot;no&quot;. For example using &quot;-nofoo&quot;
will set the boolean option with name &quot;foo&quot; to false.
</p>
<a class="anchor" id="Stream-specifiers"></a><ul class="mini-toc">
<li><a href="#Stream-specifiers-1" accesskey="1">Stream specifiers</a></li>
<li><a href="#Generic-options" accesskey="2">Generic options</a></li>
<li><a href="#AVOptions" accesskey="3">AVOptions</a></li>
<li><a href="#Main-options" accesskey="4">Main options</a></li>
<li><a href="#Advanced-options" accesskey="5">Advanced options</a></li>
<li><a href="#While-playing" accesskey="6">While playing</a></li>
</ul>
<div class="section-level-extent" id="Stream-specifiers-1">
<h3 class="section">3.1 Stream specifiers</h3>
<p>Some options are applied per-stream, e.g. bitrate or codec. Stream specifiers
are used to precisely specify which stream(s) a given option belongs to.
</p>
<p>A stream specifier is a string generally appended to the option name and
separated from it by a colon. E.g. <code class="code">-codec:a:1 ac3</code> contains the
<code class="code">a:1</code> stream specifier, which matches the second audio stream. Therefore, it
would select the ac3 codec for the second audio stream.
</p>
<p>A stream specifier can match several streams, so that the option is applied to all
of them. E.g. the stream specifier in <code class="code">-b:a 128k</code> matches all audio
streams.
</p>
<p>An empty stream specifier matches all streams. For example, <code class="code">-codec copy</code>
or <code class="code">-codec: copy</code> would copy all the streams without reencoding.
</p>
<p>Possible forms of stream specifiers are:
</p><dl class="table">
<dt><samp class="option"><var class="var">stream_index</var></samp></dt>
<dd><p>Matches the stream with this index. E.g. <code class="code">-threads:1 4</code> would set the
thread count for the second stream to 4. If <var class="var">stream_index</var> is used as an
additional stream specifier (see below), then it selects stream number
<var class="var">stream_index</var> from the matching streams. Stream numbering is based on the
order of the streams as detected by libavformat except when a program ID is
also specified. In this case it is based on the ordering of the streams in the
program.
</p></dd>
<dt><samp class="option"><var class="var">stream_type</var>[:<var class="var">additional_stream_specifier</var>]</samp></dt>
<dd><p><var class="var">stream_type</var> is one of following: &rsquo;v&rsquo; or &rsquo;V&rsquo; for video, &rsquo;a&rsquo; for audio, &rsquo;s&rsquo;
for subtitle, &rsquo;d&rsquo; for data, and &rsquo;t&rsquo; for attachments. &rsquo;v&rsquo; matches all video
streams, &rsquo;V&rsquo; only matches video streams which are not attached pictures, video
thumbnails or cover arts. If <var class="var">additional_stream_specifier</var> is used, then
it matches streams which both have this type and match the
<var class="var">additional_stream_specifier</var>. Otherwise, it matches all streams of the
specified type.
</p></dd>
<dt><samp class="option">p:<var class="var">program_id</var>[:<var class="var">additional_stream_specifier</var>]</samp></dt>
<dd><p>Matches streams which are in the program with the id <var class="var">program_id</var>. If
<var class="var">additional_stream_specifier</var> is used, then it matches streams which both
are part of the program and match the <var class="var">additional_stream_specifier</var>.
</p>
</dd>
<dt><samp class="option">#<var class="var">stream_id</var> or i:<var class="var">stream_id</var></samp></dt>
<dd><p>Match the stream by stream id (e.g. PID in MPEG-TS container).
</p></dd>
<dt><samp class="option">m:<var class="var">key</var>[:<var class="var">value</var>]</samp></dt>
<dd><p>Matches streams with the metadata tag <var class="var">key</var> having the specified value. If
<var class="var">value</var> is not given, matches streams that contain the given tag with any
value.
</p></dd>
<dt><samp class="option">u</samp></dt>
<dd><p>Matches streams with usable configuration, the codec must be defined and the
essential information such as video dimension or audio sample rate must be present.
</p>
<p>Note that in <code class="command">ffmpeg</code>, matching by metadata will only work properly for
input files.
</p></dd>
</dl>
</div>
<div class="section-level-extent" id="Generic-options">
<h3 class="section">3.2 Generic options</h3>
<p>These options are shared amongst the ff* tools.
</p>
<dl class="table">
<dt><samp class="option">-L</samp></dt>
<dd><p>Show license.
</p>
</dd>
<dt><samp class="option">-h, -?, -help, --help [<var class="var">arg</var>]</samp></dt>
<dd><p>Show help. An optional parameter may be specified to print help about a specific
item. If no argument is specified, only basic (non advanced) tool
options are shown.
</p>
<p>Possible values of <var class="var">arg</var> are:
</p><dl class="table">
<dt><samp class="option">long</samp></dt>
<dd><p>Print advanced tool options in addition to the basic tool options.
</p>
</dd>
<dt><samp class="option">full</samp></dt>
<dd><p>Print complete list of options, including shared and private options
for encoders, decoders, demuxers, muxers, filters, etc.
</p>
</dd>
<dt><samp class="option">decoder=<var class="var">decoder_name</var></samp></dt>
<dd><p>Print detailed information about the decoder named <var class="var">decoder_name</var>. Use the
<samp class="option">-decoders</samp> option to get a list of all decoders.
</p>
</dd>
<dt><samp class="option">encoder=<var class="var">encoder_name</var></samp></dt>
<dd><p>Print detailed information about the encoder named <var class="var">encoder_name</var>. Use the
<samp class="option">-encoders</samp> option to get a list of all encoders.
</p>
</dd>
<dt><samp class="option">demuxer=<var class="var">demuxer_name</var></samp></dt>
<dd><p>Print detailed information about the demuxer named <var class="var">demuxer_name</var>. Use the
<samp class="option">-formats</samp> option to get a list of all demuxers and muxers.
</p>
</dd>
<dt><samp class="option">muxer=<var class="var">muxer_name</var></samp></dt>
<dd><p>Print detailed information about the muxer named <var class="var">muxer_name</var>. Use the
<samp class="option">-formats</samp> option to get a list of all muxers and demuxers.
</p>
</dd>
<dt><samp class="option">filter=<var class="var">filter_name</var></samp></dt>
<dd><p>Print detailed information about the filter named <var class="var">filter_name</var>. Use the
<samp class="option">-filters</samp> option to get a list of all filters.
</p>
</dd>
<dt><samp class="option">bsf=<var class="var">bitstream_filter_name</var></samp></dt>
<dd><p>Print detailed information about the bitstream filter named <var class="var">bitstream_filter_name</var>.
Use the <samp class="option">-bsfs</samp> option to get a list of all bitstream filters.
</p>
</dd>
<dt><samp class="option">protocol=<var class="var">protocol_name</var></samp></dt>
<dd><p>Print detailed information about the protocol named <var class="var">protocol_name</var>.
Use the <samp class="option">-protocols</samp> option to get a list of all protocols.
</p></dd>
</dl>
</dd>
<dt><samp class="option">-version</samp></dt>
<dd><p>Show version.
</p>
</dd>
<dt><samp class="option">-buildconf</samp></dt>
<dd><p>Show the build configuration, one option per line.
</p>
</dd>
<dt><samp class="option">-formats</samp></dt>
<dd><p>Show available formats (including devices).
</p>
</dd>
<dt><samp class="option">-demuxers</samp></dt>
<dd><p>Show available demuxers.
</p>
</dd>
<dt><samp class="option">-muxers</samp></dt>
<dd><p>Show available muxers.
</p>
</dd>
<dt><samp class="option">-devices</samp></dt>
<dd><p>Show available devices.
</p>
</dd>
<dt><samp class="option">-codecs</samp></dt>
<dd><p>Show all codecs known to libavcodec.
</p>
<p>Note that the term &rsquo;codec&rsquo; is used throughout this documentation as a shortcut
for what is more correctly called a media bitstream format.
</p>
</dd>
<dt><samp class="option">-decoders</samp></dt>
<dd><p>Show available decoders.
</p>
</dd>
<dt><samp class="option">-encoders</samp></dt>
<dd><p>Show all available encoders.
</p>
</dd>
<dt><samp class="option">-bsfs</samp></dt>
<dd><p>Show available bitstream filters.
</p>
</dd>
<dt><samp class="option">-protocols</samp></dt>
<dd><p>Show available protocols.
</p>
</dd>
<dt><samp class="option">-filters</samp></dt>
<dd><p>Show available libavfilter filters.
</p>
</dd>
<dt><samp class="option">-pix_fmts</samp></dt>
<dd><p>Show available pixel formats.
</p>
</dd>
<dt><samp class="option">-sample_fmts</samp></dt>
<dd><p>Show available sample formats.
</p>
</dd>
<dt><samp class="option">-layouts</samp></dt>
<dd><p>Show channel names and standard channel layouts.
</p>
</dd>
<dt><samp class="option">-dispositions</samp></dt>
<dd><p>Show stream dispositions.
</p>
</dd>
<dt><samp class="option">-colors</samp></dt>
<dd><p>Show recognized color names.
</p>
</dd>
<dt><samp class="option">-sources <var class="var">device</var>[,<var class="var">opt1</var>=<var class="var">val1</var>[,<var class="var">opt2</var>=<var class="var">val2</var>]...]</samp></dt>
<dd><p>Show autodetected sources of the input device.
Some devices may provide system-dependent source names that cannot be autodetected.
The returned list cannot be assumed to be always complete.
</p><div class="example">
<pre class="example-preformatted">ffmpeg -sources pulse,server=192.168.0.4
</pre></div>
</dd>
<dt><samp class="option">-sinks <var class="var">device</var>[,<var class="var">opt1</var>=<var class="var">val1</var>[,<var class="var">opt2</var>=<var class="var">val2</var>]...]</samp></dt>
<dd><p>Show autodetected sinks of the output device.
Some devices may provide system-dependent sink names that cannot be autodetected.
The returned list cannot be assumed to be always complete.
</p><div class="example">
<pre class="example-preformatted">ffmpeg -sinks pulse,server=192.168.0.4
</pre></div>
</dd>
<dt><samp class="option">-loglevel [<var class="var">flags</var>+]<var class="var">loglevel</var> | -v [<var class="var">flags</var>+]<var class="var">loglevel</var></samp></dt>
<dd><p>Set logging level and flags used by the library.
</p>
<p>The optional <var class="var">flags</var> prefix can consist of the following values:
</p><dl class="table">
<dt>&lsquo;<samp class="samp">repeat</samp>&rsquo;</dt>
<dd><p>Indicates that repeated log output should not be compressed to the first line
and the &quot;Last message repeated n times&quot; line will be omitted.
</p></dd>
<dt>&lsquo;<samp class="samp">level</samp>&rsquo;</dt>
<dd><p>Indicates that log output should add a <code class="code">[level]</code> prefix to each message
line. This can be used as an alternative to log coloring, e.g. when dumping the
log to file.
</p></dd>
</dl>
<p>Flags can also be used alone by adding a &rsquo;+&rsquo;/&rsquo;-&rsquo; prefix to set/reset a single
flag without affecting other <var class="var">flags</var> or changing <var class="var">loglevel</var>. When
setting both <var class="var">flags</var> and <var class="var">loglevel</var>, a &rsquo;+&rsquo; separator is expected
between the last <var class="var">flags</var> value and before <var class="var">loglevel</var>.
</p>
<p><var class="var">loglevel</var> is a string or a number containing one of the following values:
</p><dl class="table">
<dt>&lsquo;<samp class="samp">quiet, -8</samp>&rsquo;</dt>
<dd><p>Show nothing at all; be silent.
</p></dd>
<dt>&lsquo;<samp class="samp">panic, 0</samp>&rsquo;</dt>
<dd><p>Only show fatal errors which could lead the process to crash, such as
an assertion failure. This is not currently used for anything.
</p></dd>
<dt>&lsquo;<samp class="samp">fatal, 8</samp>&rsquo;</dt>
<dd><p>Only show fatal errors. These are errors after which the process absolutely
cannot continue.
</p></dd>
<dt>&lsquo;<samp class="samp">error, 16</samp>&rsquo;</dt>
<dd><p>Show all errors, including ones which can be recovered from.
</p></dd>
<dt>&lsquo;<samp class="samp">warning, 24</samp>&rsquo;</dt>
<dd><p>Show all warnings and errors. Any message related to possibly
incorrect or unexpected events will be shown.
</p></dd>
<dt>&lsquo;<samp class="samp">info, 32</samp>&rsquo;</dt>
<dd><p>Show informative messages during processing. This is in addition to
warnings and errors. This is the default value.
</p></dd>
<dt>&lsquo;<samp class="samp">verbose, 40</samp>&rsquo;</dt>
<dd><p>Same as <code class="code">info</code>, except more verbose.
</p></dd>
<dt>&lsquo;<samp class="samp">debug, 48</samp>&rsquo;</dt>
<dd><p>Show everything, including debugging information.
</p></dd>
<dt>&lsquo;<samp class="samp">trace, 56</samp>&rsquo;</dt>
</dl>
<p>For example to enable repeated log output, add the <code class="code">level</code> prefix, and set
<var class="var">loglevel</var> to <code class="code">verbose</code>:
</p><div class="example">
<pre class="example-preformatted">ffmpeg -loglevel repeat+level+verbose -i input output
</pre></div>
<p>Another example that enables repeated log output without affecting current
state of <code class="code">level</code> prefix flag or <var class="var">loglevel</var>:
</p><div class="example">
<pre class="example-preformatted">ffmpeg [...] -loglevel +repeat
</pre></div>
<p>By default the program logs to stderr. If coloring is supported by the
terminal, colors are used to mark errors and warnings. Log coloring
can be disabled setting the environment variable
<code class="env">AV_LOG_FORCE_NOCOLOR</code>, or can be forced setting
the environment variable <code class="env">AV_LOG_FORCE_COLOR</code>.
</p>
</dd>
<dt><samp class="option">-report</samp></dt>
<dd><p>Dump full command line and log output to a file named
<code class="code"><var class="var">program</var>-<var class="var">YYYYMMDD</var>-<var class="var">HHMMSS</var>.log</code> in the current
directory.
This file can be useful for bug reports.
It also implies <code class="code">-loglevel debug</code>.
</p>
<p>Setting the environment variable <code class="env">FFREPORT</code> to any value has the
same effect. If the value is a &rsquo;:&rsquo;-separated key=value sequence, these
options will affect the report; option values must be escaped if they
contain special characters or the options delimiter &rsquo;:&rsquo; (see the
&ldquo;Quoting and escaping&rdquo; section in the ffmpeg-utils manual).
</p>
<p>The following options are recognized:
</p><dl class="table">
<dt><samp class="option">file</samp></dt>
<dd><p>set the file name to use for the report; <code class="code">%p</code> is expanded to the name
of the program, <code class="code">%t</code> is expanded to a timestamp, <code class="code">%%</code> is expanded
to a plain <code class="code">%</code>
</p></dd>
<dt><samp class="option">level</samp></dt>
<dd><p>set the log verbosity level using a numerical value (see <code class="code">-loglevel</code>).
</p></dd>
</dl>
<p>For example, to output a report to a file named <samp class="file">ffreport.log</samp>
using a log level of <code class="code">32</code> (alias for log level <code class="code">info</code>):
</p>
<div class="example">
<pre class="example-preformatted">FFREPORT=file=ffreport.log:level=32 ffmpeg -i input output
</pre></div>
<p>Errors in parsing the environment variable are not fatal, and will not
appear in the report.
</p>
</dd>
<dt><samp class="option">-hide_banner</samp></dt>
<dd><p>Suppress printing banner.
</p>
<p>All FFmpeg tools will normally show a copyright notice, build options
and library versions. This option can be used to suppress printing
this information.
</p>
</dd>
<dt><samp class="option">-cpuflags flags (<em class="emph">global</em>)</samp></dt>
<dd><p>Allows setting and clearing cpu flags. This option is intended
for testing. Do not use it unless you know what you&rsquo;re doing.
</p><div class="example">
<pre class="example-preformatted">ffmpeg -cpuflags -sse+mmx ...
ffmpeg -cpuflags mmx ...
ffmpeg -cpuflags 0 ...
</pre></div>
<p>Possible flags for this option are:
</p><dl class="table">
<dt>&lsquo;<samp class="samp">x86</samp>&rsquo;</dt>
<dd><dl class="table">
<dt>&lsquo;<samp class="samp">mmx</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">mmxext</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">sse</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">sse2</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">sse2slow</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">sse3</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">sse3slow</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">ssse3</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">atom</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">sse4.1</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">sse4.2</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">avx</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">avx2</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">xop</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">fma3</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">fma4</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">3dnow</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">3dnowext</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">bmi1</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">bmi2</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">cmov</samp>&rsquo;</dt>
</dl>
</dd>
<dt>&lsquo;<samp class="samp">ARM</samp>&rsquo;</dt>
<dd><dl class="table">
<dt>&lsquo;<samp class="samp">armv5te</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">armv6</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">armv6t2</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">vfp</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">vfpv3</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">neon</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">setend</samp>&rsquo;</dt>
</dl>
</dd>
<dt>&lsquo;<samp class="samp">AArch64</samp>&rsquo;</dt>
<dd><dl class="table">
<dt>&lsquo;<samp class="samp">armv8</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">vfp</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">neon</samp>&rsquo;</dt>
</dl>
</dd>
<dt>&lsquo;<samp class="samp">PowerPC</samp>&rsquo;</dt>
<dd><dl class="table">
<dt>&lsquo;<samp class="samp">altivec</samp>&rsquo;</dt>
</dl>
</dd>
<dt>&lsquo;<samp class="samp">Specific Processors</samp>&rsquo;</dt>
<dd><dl class="table">
<dt>&lsquo;<samp class="samp">pentium2</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">pentium3</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">pentium4</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">k6</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">k62</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">athlon</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">athlonxp</samp>&rsquo;</dt>
<dt>&lsquo;<samp class="samp">k8</samp>&rsquo;</dt>
</dl>
</dd>
</dl>
</dd>
<dt><samp class="option">-cpucount <var class="var">count</var> (<em class="emph">global</em>)</samp></dt>
<dd><p>Override detection of CPU count. This option is intended
for testing. Do not use it unless you know what you&rsquo;re doing.
</p><div class="example">
<pre class="example-preformatted">ffmpeg -cpucount 2
</pre></div>
</dd>
<dt><samp class="option">-max_alloc <var class="var">bytes</var></samp></dt>
<dd><p>Set the maximum size limit for allocating a block on the heap by ffmpeg&rsquo;s
family of malloc functions. Exercise <strong class="strong">extreme caution</strong> when using
this option. Don&rsquo;t use if you do not understand the full consequence of doing so.
Default is INT_MAX.
</p></dd>
</dl>
</div>
<div class="section-level-extent" id="AVOptions">
<h3 class="section">3.3 AVOptions</h3>
<p>These options are provided directly by the libavformat, libavdevice and
libavcodec libraries. To see the list of available AVOptions, use the
<samp class="option">-help</samp> option. They are separated into two categories:
</p><dl class="table">
<dt><samp class="option">generic</samp></dt>
<dd><p>These options can be set for any container, codec or device. Generic options
are listed under AVFormatContext options for containers/devices and under
AVCodecContext options for codecs.
</p></dd>
<dt><samp class="option">private</samp></dt>
<dd><p>These options are specific to the given container, device or codec. Private
options are listed under their corresponding containers/devices/codecs.
</p></dd>
</dl>
<p>For example to write an ID3v2.3 header instead of a default ID3v2.4 to
an MP3 file, use the <samp class="option">id3v2_version</samp> private option of the MP3
muxer:
</p><div class="example">
<pre class="example-preformatted">ffmpeg -i input.flac -id3v2_version 3 out.mp3
</pre></div>
<p>All codec AVOptions are per-stream, and thus a stream specifier
should be attached to them:
</p><div class="example">
<pre class="example-preformatted">ffmpeg -i multichannel.mxf -map 0:v:0 -map 0:a:0 -map 0:a:0 -c:a:0 ac3 -b:a:0 640k -ac:a:1 2 -c:a:1 aac -b:2 128k out.mp4
</pre></div>
<p>In the above example, a multichannel audio stream is mapped twice for output.
The first instance is encoded with codec ac3 and bitrate 640k.
The second instance is downmixed to 2 channels and encoded with codec aac. A bitrate of 128k is specified for it using
absolute index of the output stream.
</p>
<p>Note: the <samp class="option">-nooption</samp> syntax cannot be used for boolean
AVOptions, use <samp class="option">-option 0</samp>/<samp class="option">-option 1</samp>.
</p>
<p>Note: the old undocumented way of specifying per-stream AVOptions by
prepending v/a/s to the options name is now obsolete and will be
removed soon.
</p>
</div>
<div class="section-level-extent" id="Main-options">
<h3 class="section">3.4 Main options</h3>
<dl class="table">
<dt><samp class="option">-x <var class="var">width</var></samp></dt>
<dd><p>Force displayed width.
</p></dd>
<dt><samp class="option">-y <var class="var">height</var></samp></dt>
<dd><p>Force displayed height.
</p></dd>
<dt><samp class="option">-fs</samp></dt>
<dd><p>Start in fullscreen mode.
</p></dd>
<dt><samp class="option">-an</samp></dt>
<dd><p>Disable audio.
</p></dd>
<dt><samp class="option">-vn</samp></dt>
<dd><p>Disable video.
</p></dd>
<dt><samp class="option">-sn</samp></dt>
<dd><p>Disable subtitles.
</p></dd>
<dt><samp class="option">-ss <var class="var">pos</var></samp></dt>
<dd><p>Seek to <var class="var">pos</var>. Note that in most formats it is not possible to seek
exactly, so <code class="command">ffplay</code> will seek to the nearest seek point to
<var class="var">pos</var>.
</p>
<p><var class="var">pos</var> must be a time duration specification,
see <a data-manual="ffmpeg-utils" href="ffmpeg-utils.html#time-duration-syntax">(ffmpeg-utils)the Time duration section in the ffmpeg-utils(1) manual</a>.
</p></dd>
<dt><samp class="option">-t <var class="var">duration</var></samp></dt>
<dd><p>Play <var class="var">duration</var> seconds of audio/video.
</p>
<p><var class="var">duration</var> must be a time duration specification,
see <a data-manual="ffmpeg-utils" href="ffmpeg-utils.html#time-duration-syntax">(ffmpeg-utils)the Time duration section in the ffmpeg-utils(1) manual</a>.
</p></dd>
<dt><samp class="option">-bytes</samp></dt>
<dd><p>Seek by bytes.
</p></dd>
<dt><samp class="option">-seek_interval</samp></dt>
<dd><p>Set custom interval, in seconds, for seeking using left/right keys. Default is 10 seconds.
</p></dd>
<dt><samp class="option">-nodisp</samp></dt>
<dd><p>Disable graphical display.
</p></dd>
<dt><samp class="option">-noborder</samp></dt>
<dd><p>Borderless window.
</p></dd>
<dt><samp class="option">-alwaysontop</samp></dt>
<dd><p>Window always on top. Available on: X11 with SDL &gt;= 2.0.5, Windows SDL &gt;= 2.0.6.
</p></dd>
<dt><samp class="option">-volume</samp></dt>
<dd><p>Set the startup volume. 0 means silence, 100 means no volume reduction or
amplification. Negative values are treated as 0, values above 100 are treated
as 100.
</p></dd>
<dt><samp class="option">-f <var class="var">fmt</var></samp></dt>
<dd><p>Force format.
</p></dd>
<dt><samp class="option">-window_title <var class="var">title</var></samp></dt>
<dd><p>Set window title (default is the input filename).
</p></dd>
<dt><samp class="option">-left <var class="var">title</var></samp></dt>
<dd><p>Set the x position for the left of the window (default is a centered window).
</p></dd>
<dt><samp class="option">-top <var class="var">title</var></samp></dt>
<dd><p>Set the y position for the top of the window (default is a centered window).
</p></dd>
<dt><samp class="option">-loop <var class="var">number</var></samp></dt>
<dd><p>Loops movie playback &lt;number&gt; times. 0 means forever.
</p></dd>
<dt><samp class="option">-showmode <var class="var">mode</var></samp></dt>
<dd><p>Set the show mode to use.
Available values for <var class="var">mode</var> are:
</p><dl class="table">
<dt>&lsquo;<samp class="samp">0, video</samp>&rsquo;</dt>
<dd><p>show video
</p></dd>
<dt>&lsquo;<samp class="samp">1, waves</samp>&rsquo;</dt>
<dd><p>show audio waves
</p></dd>
<dt>&lsquo;<samp class="samp">2, rdft</samp>&rsquo;</dt>
<dd><p>show audio frequency band using RDFT ((Inverse) Real Discrete Fourier Transform)
</p></dd>
</dl>
<p>Default value is &quot;video&quot;, if video is not present or cannot be played
&quot;rdft&quot; is automatically selected.
</p>
<p>You can interactively cycle through the available show modes by
pressing the key <kbd class="key">w</kbd>.
</p>
</dd>
<dt><samp class="option">-vf <var class="var">filtergraph</var></samp></dt>
<dd><p>Create the filtergraph specified by <var class="var">filtergraph</var> and use it to
filter the video stream.
</p>
<p><var class="var">filtergraph</var> is a description of the filtergraph to apply to
the stream, and must have a single video input and a single video
output. In the filtergraph, the input is associated to the label
<code class="code">in</code>, and the output to the label <code class="code">out</code>. See the
ffmpeg-filters manual for more information about the filtergraph
syntax.
</p>
<p>You can specify this parameter multiple times and cycle through the specified
filtergraphs along with the show modes by pressing the key <kbd class="key">w</kbd>.
</p>
</dd>
<dt><samp class="option">-af <var class="var">filtergraph</var></samp></dt>
<dd><p><var class="var">filtergraph</var> is a description of the filtergraph to apply to
the input audio.
Use the option &quot;-filters&quot; to show all the available filters (including
sources and sinks).
</p>
</dd>
<dt><samp class="option">-i <var class="var">input_url</var></samp></dt>
<dd><p>Read <var class="var">input_url</var>.
</p></dd>
</dl>
</div>
<div class="section-level-extent" id="Advanced-options">
<h3 class="section">3.5 Advanced options</h3>
<dl class="table">
<dt><samp class="option">-stats</samp></dt>
<dd><p>Print several playback statistics, in particular show the stream
duration, the codec parameters, the current position in the stream and
the audio/video synchronisation drift. It is shown by default, unless the
log level is lower than <code class="code">info</code>. Its display can be forced by manually
specifying this option. To disable it, you need to specify <code class="code">-nostats</code>.
</p>
</dd>
<dt><samp class="option">-fast</samp></dt>
<dd><p>Non-spec-compliant optimizations.
</p></dd>
<dt><samp class="option">-genpts</samp></dt>
<dd><p>Generate pts.
</p></dd>
<dt><samp class="option">-sync <var class="var">type</var></samp></dt>
<dd><p>Set the master clock to audio (<code class="code">type=audio</code>), video
(<code class="code">type=video</code>) or external (<code class="code">type=ext</code>). Default is audio. The
master clock is used to control audio-video synchronization. Most media
players use audio as master clock, but in some cases (streaming or high
quality broadcast) it is necessary to change that. This option is mainly
used for debugging purposes.
</p></dd>
<dt><samp class="option">-ast <var class="var">audio_stream_specifier</var></samp></dt>
<dd><p>Select the desired audio stream using the given stream specifier. The stream
specifiers are described in the <a class="ref" href="#Stream-specifiers">Stream specifiers</a> chapter. If this option
is not specified, the &quot;best&quot; audio stream is selected in the program of the
already selected video stream.
</p></dd>
<dt><samp class="option">-vst <var class="var">video_stream_specifier</var></samp></dt>
<dd><p>Select the desired video stream using the given stream specifier. The stream
specifiers are described in the <a class="ref" href="#Stream-specifiers">Stream specifiers</a> chapter. If this option
is not specified, the &quot;best&quot; video stream is selected.
</p></dd>
<dt><samp class="option">-sst <var class="var">subtitle_stream_specifier</var></samp></dt>
<dd><p>Select the desired subtitle stream using the given stream specifier. The stream
specifiers are described in the <a class="ref" href="#Stream-specifiers">Stream specifiers</a> chapter. If this option
is not specified, the &quot;best&quot; subtitle stream is selected in the program of the
already selected video or audio stream.
</p></dd>
<dt><samp class="option">-autoexit</samp></dt>
<dd><p>Exit when video is done playing.
</p></dd>
<dt><samp class="option">-exitonkeydown</samp></dt>
<dd><p>Exit if any key is pressed.
</p></dd>
<dt><samp class="option">-exitonmousedown</samp></dt>
<dd><p>Exit if any mouse button is pressed.
</p>
</dd>
<dt><samp class="option">-codec:<var class="var">media_specifier</var> <var class="var">codec_name</var></samp></dt>
<dd><p>Force a specific decoder implementation for the stream identified by
<var class="var">media_specifier</var>, which can assume the values <code class="code">a</code> (audio),
<code class="code">v</code> (video), and <code class="code">s</code> subtitle.
</p>
</dd>
<dt><samp class="option">-acodec <var class="var">codec_name</var></samp></dt>
<dd><p>Force a specific audio decoder.
</p>
</dd>
<dt><samp class="option">-vcodec <var class="var">codec_name</var></samp></dt>
<dd><p>Force a specific video decoder.
</p>
</dd>
<dt><samp class="option">-scodec <var class="var">codec_name</var></samp></dt>
<dd><p>Force a specific subtitle decoder.
</p>
</dd>
<dt><samp class="option">-autorotate</samp></dt>
<dd><p>Automatically rotate the video according to file metadata. Enabled by
default, use <samp class="option">-noautorotate</samp> to disable it.
</p>
</dd>
<dt><samp class="option">-framedrop</samp></dt>
<dd><p>Drop video frames if video is out of sync. Enabled by default if the master
clock is not set to video. Use this option to enable frame dropping for all
master clock sources, use <samp class="option">-noframedrop</samp> to disable it.
</p>
</dd>
<dt><samp class="option">-infbuf</samp></dt>
<dd><p>Do not limit the input buffer size, read as much data as possible from the
input as soon as possible. Enabled by default for realtime streams, where data
may be dropped if not read in time. Use this option to enable infinite buffers
for all inputs, use <samp class="option">-noinfbuf</samp> to disable it.
</p>
</dd>
<dt><samp class="option">-filter_threads <var class="var">nb_threads</var></samp></dt>
<dd><p>Defines how many threads are used to process a filter pipeline. Each pipeline
will produce a thread pool with this many threads available for parallel
processing. The default is 0 which means that the thread count will be
determined by the number of available CPUs.
</p>
</dd>
</dl>
</div>
<div class="section-level-extent" id="While-playing">
<h3 class="section">3.6 While playing</h3>
<dl class="table">
<dt><kbd class="key">q, ESC</kbd></dt>
<dd><p>Quit.
</p>
</dd>
<dt><kbd class="key">f</kbd></dt>
<dd><p>Toggle full screen.
</p>
</dd>
<dt><kbd class="key">p, SPC</kbd></dt>
<dd><p>Pause.
</p>
</dd>
<dt><kbd class="key">m</kbd></dt>
<dd><p>Toggle mute.
</p>
</dd>
<dt><kbd class="key">9, 0</kbd></dt>
<dt><kbd class="key">/, *</kbd></dt>
<dd><p>Decrease and increase volume respectively.
</p>
</dd>
<dt><kbd class="key">a</kbd></dt>
<dd><p>Cycle audio channel in the current program.
</p>
</dd>
<dt><kbd class="key">v</kbd></dt>
<dd><p>Cycle video channel.
</p>
</dd>
<dt><kbd class="key">t</kbd></dt>
<dd><p>Cycle subtitle channel in the current program.
</p>
</dd>
<dt><kbd class="key">c</kbd></dt>
<dd><p>Cycle program.
</p>
</dd>
<dt><kbd class="key">w</kbd></dt>
<dd><p>Cycle video filters or show modes.
</p>
</dd>
<dt><kbd class="key">s</kbd></dt>
<dd><p>Step to the next frame.
</p>
<p>Pause if the stream is not already paused, step to the next video
frame, and pause.
</p>
</dd>
<dt><kbd class="key">left/right</kbd></dt>
<dd><p>Seek backward/forward 10 seconds.
</p>
</dd>
<dt><kbd class="key">down/up</kbd></dt>
<dd><p>Seek backward/forward 1 minute.
</p>
</dd>
<dt><kbd class="key">page down/page up</kbd></dt>
<dd><p>Seek to the previous/next chapter.
or if there are no chapters
Seek backward/forward 10 minutes.
</p>
</dd>
<dt><kbd class="key">right mouse click</kbd></dt>
<dd><p>Seek to percentage in file corresponding to fraction of width.
</p>
</dd>
<dt><kbd class="key">left mouse double-click</kbd></dt>
<dd><p>Toggle full screen.
</p>
</dd>
</dl>
</div>
</div>
<div class="chapter-level-extent" id="See-Also">
<h2 class="chapter">4 See Also</h2>
<p><a class="url" href="ffplay-all.html">ffmpeg-all</a>,
<a class="url" href="ffmpeg.html">ffmpeg</a>, <a class="url" href="ffprobe.html">ffprobe</a>,
<a class="url" href="ffmpeg-utils.html">ffmpeg-utils</a>,
<a class="url" href="ffmpeg-scaler.html">ffmpeg-scaler</a>,
<a class="url" href="ffmpeg-resampler.html">ffmpeg-resampler</a>,
<a class="url" href="ffmpeg-codecs.html">ffmpeg-codecs</a>,
<a class="url" href="ffmpeg-bitstream-filters.html">ffmpeg-bitstream-filters</a>,
<a class="url" href="ffmpeg-formats.html">ffmpeg-formats</a>,
<a class="url" href="ffmpeg-devices.html">ffmpeg-devices</a>,
<a class="url" href="ffmpeg-protocols.html">ffmpeg-protocols</a>,
<a class="url" href="ffmpeg-filters.html">ffmpeg-filters</a>
</p>
</div>
<div class="chapter-level-extent" id="Authors">
<h2 class="chapter">5 Authors</h2>
<p>The FFmpeg developers.
</p>
<p>For details about the authorship, see the Git history of the project
(https://git.ffmpeg.org/ffmpeg), e.g. by typing the command
<code class="command">git log</code> in the FFmpeg source directory, or browsing the
online repository at <a class="url" href="https://git.ffmpeg.org/ffmpeg">https://git.ffmpeg.org/ffmpeg</a>.
</p>
<p>Maintainers for the specific components are listed in the file
<samp class="file">MAINTAINERS</samp> in the source code tree.
</p>
</div>
</div>
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<title>Using Git to develop FFmpeg</title>
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<div class="top-level-extent" id="SEC_Top">
<div class="element-contents" id="SEC_Contents">
<h2 class="contents-heading">Table of Contents</h2>
<div class="contents">
<ul class="toc-numbered-mark">
<li><a id="toc-Introduction" href="#Introduction">1 Introduction</a></li>
<li><a id="toc-Basics-Usage" href="#Basics-Usage">2 Basics Usage</a>
<ul class="toc-numbered-mark">
<li><a id="toc-Get-Git" href="#Get-Git">2.1 Get Git</a></li>
<li><a id="toc-Cloning-the-source-tree" href="#Cloning-the-source-tree">2.2 Cloning the source tree</a></li>
<li><a id="toc-Updating-the-source-tree-to-the-latest-revision-1" href="#Updating-the-source-tree-to-the-latest-revision-1">2.3 Updating the source tree to the latest revision</a></li>
<li><a id="toc-Rebasing-your-local-branches" href="#Rebasing-your-local-branches">2.4 Rebasing your local branches</a></li>
<li><a id="toc-Adding_002fremoving-files_002fdirectories" href="#Adding_002fremoving-files_002fdirectories">2.5 Adding/removing files/directories</a></li>
<li><a id="toc-Showing-modifications" href="#Showing-modifications">2.6 Showing modifications</a></li>
<li><a id="toc-Inspecting-the-changelog" href="#Inspecting-the-changelog">2.7 Inspecting the changelog</a></li>
<li><a id="toc-Checking-source-tree-status" href="#Checking-source-tree-status">2.8 Checking source tree status</a></li>
<li><a id="toc-Committing" href="#Committing">2.9 Committing</a></li>
<li><a id="toc-Writing-a-commit-message" href="#Writing-a-commit-message">2.10 Writing a commit message</a></li>
<li><a id="toc-Preparing-a-patchset" href="#Preparing-a-patchset">2.11 Preparing a patchset</a></li>
<li><a id="toc-Sending-patches-for-review" href="#Sending-patches-for-review">2.12 Sending patches for review</a></li>
<li><a id="toc-Renaming_002fmoving_002fcopying-files-or-contents-of-files" href="#Renaming_002fmoving_002fcopying-files-or-contents-of-files">2.13 Renaming/moving/copying files or contents of files</a></li>
</ul></li>
<li><a id="toc-Git-configuration" href="#Git-configuration">3 Git configuration</a>
<ul class="toc-numbered-mark">
<li><a id="toc-Personal-Git-installation" href="#Personal-Git-installation">3.1 Personal Git installation</a></li>
<li><a id="toc-Repository-configuration" href="#Repository-configuration">3.2 Repository configuration</a></li>
</ul></li>
<li><a id="toc-FFmpeg-specific" href="#FFmpeg-specific">4 FFmpeg specific</a>
<ul class="toc-numbered-mark">
<li><a id="toc-Reverting-broken-commits" href="#Reverting-broken-commits">4.1 Reverting broken commits</a></li>
<li><a id="toc-Pushing-changes-to-remote-trees" href="#Pushing-changes-to-remote-trees">4.2 Pushing changes to remote trees</a></li>
<li><a id="toc-Finding-a-specific-svn-revision" href="#Finding-a-specific-svn-revision">4.3 Finding a specific svn revision</a></li>
</ul></li>
<li><a id="toc-gpg-key-generation" href="#gpg-key-generation">5 gpg key generation</a></li>
<li><a id="toc-Pre_002dpush-checklist" href="#Pre_002dpush-checklist">6 Pre-push checklist</a></li>
<li><a id="toc-Server-Issues" href="#Server-Issues">7 Server Issues</a></li>
</ul>
</div>
</div>
<div class="chapter-level-extent" id="Introduction">
<h2 class="chapter">1 Introduction</h2>
<p>This document aims in giving some quick references on a set of useful Git
commands. You should always use the extensive and detailed documentation
provided directly by Git:
</p>
<div class="example">
<pre class="example-preformatted">git --help
man git
</pre></div>
<p>shows you the available subcommands,
</p>
<div class="example">
<pre class="example-preformatted">git &lt;command&gt; --help
man git-&lt;command&gt;
</pre></div>
<p>shows information about the subcommand &lt;command&gt;.
</p>
<p>Additional information could be found on the
<a class="url" href="http://gitref.org">Git Reference</a> website.
</p>
<p>For more information about the Git project, visit the
<a class="url" href="http://git-scm.com/">Git website</a>.
</p>
<p>Consult these resources whenever you have problems, they are quite exhaustive.
</p>
<p>What follows now is a basic introduction to Git and some FFmpeg-specific
guidelines to ease the contribution to the project.
</p>
</div>
<div class="chapter-level-extent" id="Basics-Usage">
<h2 class="chapter">2 Basics Usage</h2>
<ul class="mini-toc">
<li><a href="#Get-Git" accesskey="1">Get Git</a></li>
<li><a href="#Cloning-the-source-tree" accesskey="2">Cloning the source tree</a></li>
<li><a href="#Updating-the-source-tree-to-the-latest-revision-1" accesskey="3">Updating the source tree to the latest revision</a></li>
<li><a href="#Rebasing-your-local-branches" accesskey="4">Rebasing your local branches</a></li>
<li><a href="#Adding_002fremoving-files_002fdirectories" accesskey="5">Adding/removing files/directories</a></li>
<li><a href="#Showing-modifications" accesskey="6">Showing modifications</a></li>
<li><a href="#Inspecting-the-changelog" accesskey="7">Inspecting the changelog</a></li>
<li><a href="#Checking-source-tree-status" accesskey="8">Checking source tree status</a></li>
<li><a href="#Committing" accesskey="9">Committing</a></li>
<li><a href="#Writing-a-commit-message">Writing a commit message</a></li>
<li><a href="#Preparing-a-patchset">Preparing a patchset</a></li>
<li><a href="#Sending-patches-for-review">Sending patches for review</a></li>
<li><a href="#Renaming_002fmoving_002fcopying-files-or-contents-of-files">Renaming/moving/copying files or contents of files</a></li>
</ul>
<div class="section-level-extent" id="Get-Git">
<h3 class="section">2.1 Get Git</h3>
<p>You can get Git from <a class="url" href="http://git-scm.com/">http://git-scm.com/</a>
Most distribution and operating system provide a package for it.
</p>
</div>
<div class="section-level-extent" id="Cloning-the-source-tree">
<h3 class="section">2.2 Cloning the source tree</h3>
<div class="example">
<pre class="example-preformatted">git clone https://git.ffmpeg.org/ffmpeg.git &lt;target&gt;
</pre></div>
<p>This will put the FFmpeg sources into the directory <var class="var">&lt;target&gt;</var>.
</p>
<div class="example">
<pre class="example-preformatted">git clone git@source.ffmpeg.org:ffmpeg &lt;target&gt;
</pre></div>
<p>This will put the FFmpeg sources into the directory <var class="var">&lt;target&gt;</var> and let
you push back your changes to the remote repository.
</p>
<div class="example">
<pre class="example-preformatted">git clone gil@ffmpeg.org:ffmpeg-web &lt;target&gt;
</pre></div>
<p>This will put the source of the FFmpeg website into the directory
<var class="var">&lt;target&gt;</var> and let you push back your changes to the remote repository.
(Note that <var class="var">gil</var> stands for GItoLite and is not a typo of <var class="var">git</var>.)
</p>
<p>If you don&rsquo;t have write-access to the ffmpeg-web repository, you can
create patches after making a read-only ffmpeg-web clone:
</p>
<div class="example">
<pre class="example-preformatted">git clone git://ffmpeg.org/ffmpeg-web &lt;target&gt;
</pre></div>
<p>Make sure that you do not have Windows line endings in your checkouts,
otherwise you may experience spurious compilation failures. One way to
achieve this is to run
</p>
<div class="example">
<pre class="example-preformatted">git config --global core.autocrlf false
</pre></div>
<a class="anchor" id="Updating-the-source-tree-to-the-latest-revision"></a></div>
<div class="section-level-extent" id="Updating-the-source-tree-to-the-latest-revision-1">
<h3 class="section">2.3 Updating the source tree to the latest revision</h3>
<div class="example">
<pre class="example-preformatted">git pull (--rebase)
</pre></div>
<p>pulls in the latest changes from the tracked branch. The tracked branch
can be remote. By default the master branch tracks the branch master in
the remote origin.
</p>
<div class="float">
<p><code class="command">--rebase</code> (see below) is recommended.
</p><div class="type-number-float"><p><strong class="strong">IMPORTANT
</strong></p></div></div>
</div>
<div class="section-level-extent" id="Rebasing-your-local-branches">
<h3 class="section">2.4 Rebasing your local branches</h3>
<div class="example">
<pre class="example-preformatted">git pull --rebase
</pre></div>
<p>fetches the changes from the main repository and replays your local commits
over it. This is required to keep all your local changes at the top of
FFmpeg&rsquo;s master tree. The master tree will reject pushes with merge commits.
</p>
</div>
<div class="section-level-extent" id="Adding_002fremoving-files_002fdirectories">
<h3 class="section">2.5 Adding/removing files/directories</h3>
<div class="example">
<pre class="example-preformatted">git add [-A] &lt;filename/dirname&gt;
git rm [-r] &lt;filename/dirname&gt;
</pre></div>
<p>Git needs to get notified of all changes you make to your working
directory that makes files appear or disappear.
Line moves across files are automatically tracked.
</p>
</div>
<div class="section-level-extent" id="Showing-modifications">
<h3 class="section">2.6 Showing modifications</h3>
<div class="example">
<pre class="example-preformatted">git diff &lt;filename(s)&gt;
</pre></div>
<p>will show all local modifications in your working directory as unified diff.
</p>
</div>
<div class="section-level-extent" id="Inspecting-the-changelog">
<h3 class="section">2.7 Inspecting the changelog</h3>
<div class="example">
<pre class="example-preformatted">git log &lt;filename(s)&gt;
</pre></div>
<p>You may also use the graphical tools like <code class="command">gitview</code> or <code class="command">gitk</code>
or the web interface available at <a class="url" href="http://source.ffmpeg.org/">http://source.ffmpeg.org/</a>.
</p>
</div>
<div class="section-level-extent" id="Checking-source-tree-status">
<h3 class="section">2.8 Checking source tree status</h3>
<div class="example">
<pre class="example-preformatted">git status
</pre></div>
<p>detects all the changes you made and lists what actions will be taken in case
of a commit (additions, modifications, deletions, etc.).
</p>
</div>
<div class="section-level-extent" id="Committing">
<h3 class="section">2.9 Committing</h3>
<div class="example">
<pre class="example-preformatted">git diff --check
</pre></div>
<p>to double check your changes before committing them to avoid trouble later
on. All experienced developers do this on each and every commit, no matter
how small.
</p>
<p>Every one of them has been saved from looking like a fool by this many times.
It&rsquo;s very easy for stray debug output or cosmetic modifications to slip in,
please avoid problems through this extra level of scrutiny.
</p>
<p>For cosmetics-only commits you should get (almost) empty output from
</p>
<div class="example">
<pre class="example-preformatted">git diff -w -b &lt;filename(s)&gt;
</pre></div>
<p>Also check the output of
</p>
<div class="example">
<pre class="example-preformatted">git status
</pre></div>
<p>to make sure you don&rsquo;t have untracked files or deletions.
</p>
<div class="example">
<pre class="example-preformatted">git add [-i|-p|-A] &lt;filenames/dirnames&gt;
</pre></div>
<p>Make sure you have told Git your name, email address and GPG key
</p>
<div class="example">
<pre class="example-preformatted">git config --global user.name &quot;My Name&quot;
git config --global user.email my@email.invalid
git config --global user.signingkey ABCDEF0123245
</pre></div>
<p>Enable signing all commits or use -S
</p>
<div class="example">
<pre class="example-preformatted">git config --global commit.gpgsign true
</pre></div>
<p>Use <samp class="option">--global</samp> to set the global configuration for all your Git checkouts.
</p>
<p>Git will select the changes to the files for commit. Optionally you can use
the interactive or the patch mode to select hunk by hunk what should be
added to the commit.
</p>
<div class="example">
<pre class="example-preformatted">git commit
</pre></div>
<p>Git will commit the selected changes to your current local branch.
</p>
<p>You will be prompted for a log message in an editor, which is either
set in your personal configuration file through
</p>
<div class="example">
<pre class="example-preformatted">git config --global core.editor
</pre></div>
<p>or set by one of the following environment variables:
<var class="var">GIT_EDITOR</var>, <var class="var">VISUAL</var> or <var class="var">EDITOR</var>.
</p>
</div>
<div class="section-level-extent" id="Writing-a-commit-message">
<h3 class="section">2.10 Writing a commit message</h3>
<p>Log messages should be concise but descriptive.
</p>
<p>The first line must contain the context, a colon and a very short
summary of what the commit does. Details can be added, if necessary,
separated by an empty line. These details should not exceed 60-72 characters
per line, except when containing code.
</p>
<p>Example of a good commit message:
</p>
<div class="example">
<pre class="example-preformatted">avcodec/cbs: add a helper to read extradata within packet side data
Using ff_cbs_read() on the raw buffer will not parse it as extradata,
resulting in parsing errors for example when handling ISOBMFF avcC.
This helper works around that.
</pre></div>
<div class="example">
<pre class="example-preformatted">ptr might be NULL
</pre></div>
<p>If the summary on the first line is not enough, in the body of the message,
explain why you made a change, what you did will be obvious from the changes
themselves most of the time. Saying just &quot;bug fix&quot; or &quot;10l&quot; is bad. Remember
that people of varying skill levels look at and educate themselves while
reading through your code. Don&rsquo;t include filenames in log messages except in
the context, Git provides that information.
</p>
<p>If the commit fixes a registered issue, state it in a separate line of the
body: <code class="code">Fix Trac ticket #42.</code>
</p>
<p>The first line will be used to name
the patch by <code class="command">git format-patch</code>.
</p>
<p>Common mistakes for the first line, as seen in <code class="command">git log --oneline</code>
include: missing context at the beginning; description of what the code did
before the patch; line too long or wrapped to the second line.
</p>
</div>
<div class="section-level-extent" id="Preparing-a-patchset">
<h3 class="section">2.11 Preparing a patchset</h3>
<div class="example">
<pre class="example-preformatted">git format-patch &lt;commit&gt; [-o directory]
</pre></div>
<p>will generate a set of patches for each commit between <var class="var">&lt;commit&gt;</var> and
current <var class="var">HEAD</var>. E.g.
</p>
<div class="example">
<pre class="example-preformatted">git format-patch origin/master
</pre></div>
<p>will generate patches for all commits on current branch which are not
present in upstream.
A useful shortcut is also
</p>
<div class="example">
<pre class="example-preformatted">git format-patch -n
</pre></div>
<p>which will generate patches from last <var class="var">n</var> commits.
By default the patches are created in the current directory.
</p>
</div>
<div class="section-level-extent" id="Sending-patches-for-review">
<h3 class="section">2.12 Sending patches for review</h3>
<div class="example">
<pre class="example-preformatted">git send-email &lt;commit list|directory&gt;
</pre></div>
<p>will send the patches created by <code class="command">git format-patch</code> or directly
generates them. All the email fields can be configured in the global/local
configuration or overridden by command line.
Note that this tool must often be installed separately (e.g. <var class="var">git-email</var>
package on Debian-based distros).
</p>
</div>
<div class="section-level-extent" id="Renaming_002fmoving_002fcopying-files-or-contents-of-files">
<h3 class="section">2.13 Renaming/moving/copying files or contents of files</h3>
<p>Git automatically tracks such changes, making those normal commits.
</p>
<div class="example">
<pre class="example-preformatted">mv/cp path/file otherpath/otherfile
git add [-A] .
git commit
</pre></div>
</div>
</div>
<div class="chapter-level-extent" id="Git-configuration">
<h2 class="chapter">3 Git configuration</h2>
<p>In order to simplify a few workflows, it is advisable to configure both
your personal Git installation and your local FFmpeg repository.
</p>
<ul class="mini-toc">
<li><a href="#Personal-Git-installation" accesskey="1">Personal Git installation</a></li>
<li><a href="#Repository-configuration" accesskey="2">Repository configuration</a></li>
</ul>
<div class="section-level-extent" id="Personal-Git-installation">
<h3 class="section">3.1 Personal Git installation</h3>
<p>Add the following to your <samp class="file">~/.gitconfig</samp> to help <code class="command">git send-email</code>
and <code class="command">git format-patch</code> detect renames:
</p>
<div class="example">
<pre class="example-preformatted">[diff]
renames = copy
</pre></div>
</div>
<div class="section-level-extent" id="Repository-configuration">
<h3 class="section">3.2 Repository configuration</h3>
<p>In order to have <code class="command">git send-email</code> automatically send patches
to the ffmpeg-devel mailing list, add the following stanza
to <samp class="file">/path/to/ffmpeg/repository/.git/config</samp>:
</p>
<div class="example">
<pre class="example-preformatted">[sendemail]
to = ffmpeg-devel@ffmpeg.org
</pre></div>
</div>
</div>
<div class="chapter-level-extent" id="FFmpeg-specific">
<h2 class="chapter">4 FFmpeg specific</h2>
<ul class="mini-toc">
<li><a href="#Reverting-broken-commits" accesskey="1">Reverting broken commits</a></li>
<li><a href="#Pushing-changes-to-remote-trees" accesskey="2">Pushing changes to remote trees</a></li>
<li><a href="#Finding-a-specific-svn-revision" accesskey="3">Finding a specific svn revision</a></li>
</ul>
<div class="section-level-extent" id="Reverting-broken-commits">
<h3 class="section">4.1 Reverting broken commits</h3>
<div class="example">
<pre class="example-preformatted">git reset &lt;commit&gt;
</pre></div>
<p><code class="command">git reset</code> will uncommit the changes till <var class="var">&lt;commit&gt;</var> rewriting
the current branch history.
</p>
<div class="example">
<pre class="example-preformatted">git commit --amend
</pre></div>
<p>allows one to amend the last commit details quickly.
</p>
<div class="example">
<pre class="example-preformatted">git rebase -i origin/master
</pre></div>
<p>will replay local commits over the main repository allowing to edit, merge
or remove some of them in the process.
</p>
<div class="float">
<p><code class="command">git reset</code>, <code class="command">git commit --amend</code> and <code class="command">git rebase</code>
rewrite history, so you should use them ONLY on your local or topic branches.
The main repository will reject those changes.
</p><div class="type-number-float"><p><strong class="strong">NOTE
</strong></p></div></div>
<div class="example">
<pre class="example-preformatted">git revert &lt;commit&gt;
</pre></div>
<p><code class="command">git revert</code> will generate a revert commit. This will not make the
faulty commit disappear from the history.
</p>
</div>
<div class="section-level-extent" id="Pushing-changes-to-remote-trees">
<h3 class="section">4.2 Pushing changes to remote trees</h3>
<div class="example">
<pre class="example-preformatted">git push origin master --dry-run
</pre></div>
<p>Will simulate a push of the local master branch to the default remote
(<var class="var">origin</var>). And list which branches and ranges or commits would have been
pushed.
Git will prevent you from pushing changes if the local and remote trees are
out of sync. Refer to <a class="ref" href="#Updating-the-source-tree-to-the-latest-revision">Updating the source tree to the latest revision</a>.
</p>
<div class="example">
<pre class="example-preformatted">git remote add &lt;name&gt; &lt;url&gt;
</pre></div>
<p>Will add additional remote with a name reference, it is useful if you want
to push your local branch for review on a remote host.
</p>
<div class="example">
<pre class="example-preformatted">git push &lt;remote&gt; &lt;refspec&gt;
</pre></div>
<p>Will push the changes to the <var class="var">&lt;remote&gt;</var> repository.
Omitting <var class="var">&lt;refspec&gt;</var> makes <code class="command">git push</code> update all the remote
branches matching the local ones.
</p>
</div>
<div class="section-level-extent" id="Finding-a-specific-svn-revision">
<h3 class="section">4.3 Finding a specific svn revision</h3>
<p>Since version 1.7.1 Git supports &lsquo;<samp class="samp">:/foo</samp>&rsquo; syntax for specifying commits
based on a regular expression. see man gitrevisions
</p>
<div class="example">
<pre class="example-preformatted">git show :/'as revision 23456'
</pre></div>
<p>will show the svn changeset &lsquo;<samp class="samp">r23456</samp>&rsquo;. With older Git versions searching in
the <code class="command">git log</code> output is the easiest option (especially if a pager with
search capabilities is used).
</p>
<p>This commit can be checked out with
</p>
<div class="example">
<pre class="example-preformatted">git checkout -b svn_23456 :/'as revision 23456'
</pre></div>
<p>or for Git &lt; 1.7.1 with
</p>
<div class="example">
<pre class="example-preformatted">git checkout -b svn_23456 $SHA1
</pre></div>
<p>where <var class="var">$SHA1</var> is the commit hash from the <code class="command">git log</code> output.
</p>
</div>
</div>
<div class="chapter-level-extent" id="gpg-key-generation">
<h2 class="chapter">5 gpg key generation</h2>
<p>If you have no gpg key yet, we recommend that you create a ed25519 based key as it
is small, fast and secure. Especially it results in small signatures in git.
</p>
<div class="example">
<pre class="example-preformatted">gpg --default-new-key-algo &quot;ed25519/cert,sign+cv25519/encr&quot; --quick-generate-key &quot;human@server.com&quot;
</pre></div>
<p>When generating a key, make sure the email specified matches the email used in git as some sites like
github consider mismatches a reason to declare such commits unverified. After generating a key you
can add it to the MAINTAINER file and upload it to a keyserver.
</p>
</div>
<div class="chapter-level-extent" id="Pre_002dpush-checklist">
<h2 class="chapter">6 Pre-push checklist</h2>
<p>Once you have a set of commits that you feel are ready for pushing,
work through the following checklist to doublecheck everything is in
proper order. This list tries to be exhaustive. In case you are just
pushing a typo in a comment, some of the steps may be unnecessary.
Apply your common sense, but if in doubt, err on the side of caution.
</p>
<p>First, make sure that the commits and branches you are going to push
match what you want pushed and that nothing is missing, extraneous or
wrong. You can see what will be pushed by running the git push command
with <samp class="option">--dry-run</samp> first. And then inspecting the commits listed with
<code class="command">git log -p 1234567..987654</code>. The <code class="command">git status</code> command
may help in finding local changes that have been forgotten to be added.
</p>
<p>Next let the code pass through a full run of our test suite.
</p>
<ul class="itemize mark-bullet">
<li><code class="command">make distclean</code>
</li><li><code class="command">/path/to/ffmpeg/configure</code>
</li><li><code class="command">make fate</code>
</li><li>if fate fails due to missing samples run <code class="command">make fate-rsync</code> and retry
</li></ul>
<p>Make sure all your changes have been checked before pushing them, the
test suite only checks against regressions and that only to some extend. It does
obviously not check newly added features/code to be working unless you have
added a test for that (which is recommended).
</p>
<p>Also note that every single commit should pass the test suite, not just
the result of a series of patches.
</p>
<p>Once everything passed, push the changes to your public ffmpeg clone and post a
merge request to ffmpeg-devel. You can also push them directly but this is not
recommended.
</p>
</div>
<div class="chapter-level-extent" id="Server-Issues">
<h2 class="chapter">7 Server Issues</h2>
<p>Contact the project admins at <a class="email" href="mailto:root@ffmpeg.org">root@ffmpeg.org</a> if you have technical
problems with the Git server.
</p></div>
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<title>Libavcodec Documentation</title>
<meta name="description" content="Libavcodec Documentation">
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<div class="contents">
<ul class="toc-numbered-mark">
<li><a id="toc-Description" href="#Description">1 Description</a></li>
<li><a id="toc-See-Also" href="#See-Also">2 See Also</a></li>
<li><a id="toc-Authors" href="#Authors">3 Authors</a></li>
</ul>
</div>
</div>
<div class="chapter-level-extent" id="Description">
<h2 class="chapter">1 Description</h2>
<p>The libavcodec library provides a generic encoding/decoding framework
and contains multiple decoders and encoders for audio, video and
subtitle streams, and several bitstream filters.
</p>
<p>The shared architecture provides various services ranging from bit
stream I/O to DSP optimizations, and makes it suitable for
implementing robust and fast codecs as well as for experimentation.
</p>
</div>
<div class="chapter-level-extent" id="See-Also">
<h2 class="chapter">2 See Also</h2>
<p><a class="url" href="ffmpeg.html">ffmpeg</a>, <a class="url" href="ffplay.html">ffplay</a>, <a class="url" href="ffprobe.html">ffprobe</a>,
<a class="url" href="ffmpeg-codecs.html">ffmpeg-codecs</a>, <a class="url" href="ffmpeg-bitstream-filters.html">bitstream-filters</a>,
<a class="url" href="libavutil.html">libavutil</a>
</p>
</div>
<div class="chapter-level-extent" id="Authors">
<h2 class="chapter">3 Authors</h2>
<p>The FFmpeg developers.
</p>
<p>For details about the authorship, see the Git history of the project
(https://git.ffmpeg.org/ffmpeg), e.g. by typing the command
<code class="command">git log</code> in the FFmpeg source directory, or browsing the
online repository at <a class="url" href="https://git.ffmpeg.org/ffmpeg">https://git.ffmpeg.org/ffmpeg</a>.
</p>
<p>Maintainers for the specific components are listed in the file
<samp class="file">MAINTAINERS</samp> in the source code tree.
</p>
</div>
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<div class="contents">
<ul class="toc-numbered-mark">
<li><a id="toc-Description" href="#Description">1 Description</a></li>
<li><a id="toc-See-Also" href="#See-Also">2 See Also</a></li>
<li><a id="toc-Authors" href="#Authors">3 Authors</a></li>
</ul>
</div>
</div>
<div class="chapter-level-extent" id="Description">
<h2 class="chapter">1 Description</h2>
<p>The libavdevice library provides a generic framework for grabbing from
and rendering to many common multimedia input/output devices, and
supports several input and output devices, including Video4Linux2,
VfW, DShow, and ALSA.
</p>
</div>
<div class="chapter-level-extent" id="See-Also">
<h2 class="chapter">2 See Also</h2>
<p><a class="url" href="ffmpeg.html">ffmpeg</a>, <a class="url" href="ffplay.html">ffplay</a>, <a class="url" href="ffprobe.html">ffprobe</a>,
<a class="url" href="ffmpeg-devices.html">ffmpeg-devices</a>,
<a class="url" href="libavutil.html">libavutil</a>, <a class="url" href="libavcodec.html">libavcodec</a>, <a class="url" href="libavformat.html">libavformat</a>
</p>
</div>
<div class="chapter-level-extent" id="Authors">
<h2 class="chapter">3 Authors</h2>
<p>The FFmpeg developers.
</p>
<p>For details about the authorship, see the Git history of the project
(https://git.ffmpeg.org/ffmpeg), e.g. by typing the command
<code class="command">git log</code> in the FFmpeg source directory, or browsing the
online repository at <a class="url" href="https://git.ffmpeg.org/ffmpeg">https://git.ffmpeg.org/ffmpeg</a>.
</p>
<p>Maintainers for the specific components are listed in the file
<samp class="file">MAINTAINERS</samp> in the source code tree.
</p>
</div>
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<div class="contents">
<ul class="toc-numbered-mark">
<li><a id="toc-Description" href="#Description">1 Description</a></li>
<li><a id="toc-See-Also" href="#See-Also">2 See Also</a></li>
<li><a id="toc-Authors" href="#Authors">3 Authors</a></li>
</ul>
</div>
</div>
<div class="chapter-level-extent" id="Description">
<h2 class="chapter">1 Description</h2>
<p>The libavfilter library provides a generic audio/video filtering
framework containing several filters, sources and sinks.
</p>
</div>
<div class="chapter-level-extent" id="See-Also">
<h2 class="chapter">2 See Also</h2>
<p><a class="url" href="ffmpeg.html">ffmpeg</a>, <a class="url" href="ffplay.html">ffplay</a>, <a class="url" href="ffprobe.html">ffprobe</a>,
<a class="url" href="ffmpeg-filters.html">ffmpeg-filters</a>,
<a class="url" href="libavutil.html">libavutil</a>, <a class="url" href="libswscale.html">libswscale</a>, <a class="url" href="libswresample.html">libswresample</a>,
<a class="url" href="libavcodec.html">libavcodec</a>, <a class="url" href="libavformat.html">libavformat</a>, <a class="url" href="libavdevice.html">libavdevice</a>
</p>
</div>
<div class="chapter-level-extent" id="Authors">
<h2 class="chapter">3 Authors</h2>
<p>The FFmpeg developers.
</p>
<p>For details about the authorship, see the Git history of the project
(https://git.ffmpeg.org/ffmpeg), e.g. by typing the command
<code class="command">git log</code> in the FFmpeg source directory, or browsing the
online repository at <a class="url" href="https://git.ffmpeg.org/ffmpeg">https://git.ffmpeg.org/ffmpeg</a>.
</p>
<p>Maintainers for the specific components are listed in the file
<samp class="file">MAINTAINERS</samp> in the source code tree.
</p>
</div>
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<div class="contents">
<ul class="toc-numbered-mark">
<li><a id="toc-Description" href="#Description">1 Description</a></li>
<li><a id="toc-See-Also" href="#See-Also">2 See Also</a></li>
<li><a id="toc-Authors" href="#Authors">3 Authors</a></li>
</ul>
</div>
</div>
<div class="chapter-level-extent" id="Description">
<h2 class="chapter">1 Description</h2>
<p>The libavformat library provides a generic framework for multiplexing
and demultiplexing (muxing and demuxing) audio, video and subtitle
streams. It encompasses multiple muxers and demuxers for multimedia
container formats.
</p>
<p>It also supports several input and output protocols to access a media
resource.
</p>
</div>
<div class="chapter-level-extent" id="See-Also">
<h2 class="chapter">2 See Also</h2>
<p><a class="url" href="ffmpeg.html">ffmpeg</a>, <a class="url" href="ffplay.html">ffplay</a>, <a class="url" href="ffprobe.html">ffprobe</a>,
<a class="url" href="ffmpeg-formats.html">ffmpeg-formats</a>, <a class="url" href="ffmpeg-protocols.html">ffmpeg-protocols</a>,
<a class="url" href="libavutil.html">libavutil</a>, <a class="url" href="libavcodec.html">libavcodec</a>
</p>
</div>
<div class="chapter-level-extent" id="Authors">
<h2 class="chapter">3 Authors</h2>
<p>The FFmpeg developers.
</p>
<p>For details about the authorship, see the Git history of the project
(https://git.ffmpeg.org/ffmpeg), e.g. by typing the command
<code class="command">git log</code> in the FFmpeg source directory, or browsing the
online repository at <a class="url" href="https://git.ffmpeg.org/ffmpeg">https://git.ffmpeg.org/ffmpeg</a>.
</p>
<p>Maintainers for the specific components are listed in the file
<samp class="file">MAINTAINERS</samp> in the source code tree.
</p>
</div>
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<li><a id="toc-Description" href="#Description">1 Description</a></li>
<li><a id="toc-See-Also" href="#See-Also">2 See Also</a></li>
<li><a id="toc-Authors" href="#Authors">3 Authors</a></li>
</ul>
</div>
</div>
<div class="chapter-level-extent" id="Description">
<h2 class="chapter">1 Description</h2>
<p>The libavutil library is a utility library to aid portable
multimedia programming. It contains safe portable string functions,
random number generators, data structures, additional mathematics
functions, cryptography and multimedia related functionality (like
enumerations for pixel and sample formats). It is not a library for
code needed by both libavcodec and libavformat.
</p>
<p>The goals for this library is to be:
</p>
<dl class="table">
<dt><strong class="strong">Modular</strong></dt>
<dd><p>It should have few interdependencies and the possibility of disabling individual
parts during <code class="command">./configure</code>.
</p>
</dd>
<dt><strong class="strong">Small</strong></dt>
<dd><p>Both sources and objects should be small.
</p>
</dd>
<dt><strong class="strong">Efficient</strong></dt>
<dd><p>It should have low CPU and memory usage.
</p>
</dd>
<dt><strong class="strong">Useful</strong></dt>
<dd><p>It should avoid useless features that almost no one needs.
</p></dd>
</dl>
</div>
<div class="chapter-level-extent" id="See-Also">
<h2 class="chapter">2 See Also</h2>
<p><a class="url" href="ffmpeg.html">ffmpeg</a>, <a class="url" href="ffplay.html">ffplay</a>, <a class="url" href="ffprobe.html">ffprobe</a>,
<a class="url" href="ffmpeg-utils.html">ffmpeg-utils</a>
</p>
</div>
<div class="chapter-level-extent" id="Authors">
<h2 class="chapter">3 Authors</h2>
<p>The FFmpeg developers.
</p>
<p>For details about the authorship, see the Git history of the project
(https://git.ffmpeg.org/ffmpeg), e.g. by typing the command
<code class="command">git log</code> in the FFmpeg source directory, or browsing the
online repository at <a class="url" href="https://git.ffmpeg.org/ffmpeg">https://git.ffmpeg.org/ffmpeg</a>.
</p>
<p>Maintainers for the specific components are listed in the file
<samp class="file">MAINTAINERS</samp> in the source code tree.
</p>
</div>
</div>
</body>
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<title>Libswresample Documentation</title>
<meta name="description" content="Libswresample Documentation">
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<div class="element-contents" id="SEC_Contents">
<h2 class="contents-heading">Table of Contents</h2>
<div class="contents">
<ul class="toc-numbered-mark">
<li><a id="toc-Description" href="#Description">1 Description</a></li>
<li><a id="toc-See-Also" href="#See-Also">2 See Also</a></li>
<li><a id="toc-Authors" href="#Authors">3 Authors</a></li>
</ul>
</div>
</div>
<div class="chapter-level-extent" id="Description">
<h2 class="chapter">1 Description</h2>
<p>The libswresample library performs highly optimized audio resampling,
rematrixing and sample format conversion operations.
</p>
<p>Specifically, this library performs the following conversions:
</p>
<ul class="itemize mark-bullet">
<li><em class="emph">Resampling</em>: is the process of changing the audio rate, for
example from a high sample rate of 44100Hz to 8000Hz. Audio
conversion from high to low sample rate is a lossy process. Several
resampling options and algorithms are available.
</li><li><em class="emph">Format conversion</em>: is the process of converting the type of
samples, for example from 16-bit signed samples to unsigned 8-bit or
float samples. It also handles packing conversion, when passing from
packed layout (all samples belonging to distinct channels interleaved
in the same buffer), to planar layout (all samples belonging to the
same channel stored in a dedicated buffer or &quot;plane&quot;).
</li><li><em class="emph">Rematrixing</em>: is the process of changing the channel layout, for
example from stereo to mono. When the input channels cannot be mapped
to the output streams, the process is lossy, since it involves
different gain factors and mixing.
</li></ul>
<p>Various other audio conversions (e.g. stretching and padding) are
enabled through dedicated options.
</p>
</div>
<div class="chapter-level-extent" id="See-Also">
<h2 class="chapter">2 See Also</h2>
<p><a class="url" href="ffmpeg.html">ffmpeg</a>, <a class="url" href="ffplay.html">ffplay</a>, <a class="url" href="ffprobe.html">ffprobe</a>,
<a class="url" href="ffmpeg-resampler.html">ffmpeg-resampler</a>,
<a class="url" href="libavutil.html">libavutil</a>
</p>
</div>
<div class="chapter-level-extent" id="Authors">
<h2 class="chapter">3 Authors</h2>
<p>The FFmpeg developers.
</p>
<p>For details about the authorship, see the Git history of the project
(https://git.ffmpeg.org/ffmpeg), e.g. by typing the command
<code class="command">git log</code> in the FFmpeg source directory, or browsing the
online repository at <a class="url" href="https://git.ffmpeg.org/ffmpeg">https://git.ffmpeg.org/ffmpeg</a>.
</p>
<p>Maintainers for the specific components are listed in the file
<samp class="file">MAINTAINERS</samp> in the source code tree.
</p>
</div>
</div>
</body>
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<title>Libswscale Documentation</title>
<meta name="description" content="Libswscale Documentation">
<meta name="keywords" content="Libswscale Documentation">
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<body lang="en">
<div class="top-level-extent" id="SEC_Top">
<div class="element-contents" id="SEC_Contents">
<h2 class="contents-heading">Table of Contents</h2>
<div class="contents">
<ul class="toc-numbered-mark">
<li><a id="toc-Description" href="#Description">1 Description</a></li>
<li><a id="toc-See-Also" href="#See-Also">2 See Also</a></li>
<li><a id="toc-Authors" href="#Authors">3 Authors</a></li>
</ul>
</div>
</div>
<div class="chapter-level-extent" id="Description">
<h2 class="chapter">1 Description</h2>
<p>The libswscale library performs highly optimized image scaling and
colorspace and pixel format conversion operations.
</p>
<p>Specifically, this library performs the following conversions:
</p>
<ul class="itemize mark-bullet">
<li><em class="emph">Rescaling</em>: is the process of changing the video size. Several
rescaling options and algorithms are available. This is usually a
lossy process.
</li><li><em class="emph">Pixel format conversion</em>: is the process of converting the image
format and colorspace of the image, for example from planar YUV420P to
RGB24 packed. It also handles packing conversion, that is converts
from packed layout (all pixels belonging to distinct planes
interleaved in the same buffer), to planar layout (all samples
belonging to the same plane stored in a dedicated buffer or &quot;plane&quot;).
<p>This is usually a lossy process in case the source and destination
colorspaces differ.
</p></li></ul>
</div>
<div class="chapter-level-extent" id="See-Also">
<h2 class="chapter">2 See Also</h2>
<p><a class="url" href="ffmpeg.html">ffmpeg</a>, <a class="url" href="ffplay.html">ffplay</a>, <a class="url" href="ffprobe.html">ffprobe</a>,
<a class="url" href="ffmpeg-scaler.html">ffmpeg-scaler</a>,
<a class="url" href="libavutil.html">libavutil</a>
</p>
</div>
<div class="chapter-level-extent" id="Authors">
<h2 class="chapter">3 Authors</h2>
<p>The FFmpeg developers.
</p>
<p>For details about the authorship, see the Git history of the project
(https://git.ffmpeg.org/ffmpeg), e.g. by typing the command
<code class="command">git log</code> in the FFmpeg source directory, or browsing the
online repository at <a class="url" href="https://git.ffmpeg.org/ffmpeg">https://git.ffmpeg.org/ffmpeg</a>.
</p>
<p>Maintainers for the specific components are listed in the file
<samp class="file">MAINTAINERS</samp> in the source code tree.
</p>
</div>
</div>
</body>
</html>

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<title>FFmpeg Mailing List FAQ</title>
<meta name="description" content="FFmpeg Mailing List FAQ">
<meta name="keywords" content="FFmpeg Mailing List FAQ">
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<div class="top-level-extent" id="SEC_Top">
<div class="element-contents" id="SEC_Contents">
<h2 class="contents-heading">Table of Contents</h2>
<div class="contents">
<ul class="toc-numbered-mark">
<li><a id="toc-General-Questions" href="#General-Questions">1 General Questions</a>
<ul class="toc-numbered-mark">
<li><a id="toc-What-is-a-mailing-list_003f" href="#What-is-a-mailing-list_003f">1.1 What is a mailing list?</a></li>
<li><a id="toc-What-type-of-questions-can-I-ask_003f" href="#What-type-of-questions-can-I-ask_003f">1.2 What type of questions can I ask?</a></li>
<li><a id="toc-How-do-I-ask-a-question-or-send-a-message-to-a-mailing-list_003f-1" href="#How-do-I-ask-a-question-or-send-a-message-to-a-mailing-list_003f-1">1.3 How do I ask a question or send a message to a mailing list?</a></li>
</ul></li>
<li><a id="toc-Subscribing-_002f-Unsubscribing" href="#Subscribing-_002f-Unsubscribing">2 Subscribing / Unsubscribing</a>
<ul class="toc-numbered-mark">
<li><a id="toc-How-do-I-subscribe_003f-1" href="#How-do-I-subscribe_003f-1">2.1 How do I subscribe?</a></li>
<li><a id="toc-How-do-I-unsubscribe_003f" href="#How-do-I-unsubscribe_003f">2.2 How do I unsubscribe?</a></li>
</ul></li>
<li><a id="toc-Moderation-Queue" href="#Moderation-Queue">3 Moderation Queue</a>
<ul class="toc-numbered-mark">
<li><a id="toc-Why-is-my-message-awaiting-moderator-approval_003f-1" href="#Why-is-my-message-awaiting-moderator-approval_003f-1">3.1 Why is my message awaiting moderator approval?</a></li>
<li><a id="toc-How-long-does-it-take-for-my-message-in-the-moderation-queue-to-be-approved_003f" href="#How-long-does-it-take-for-my-message-in-the-moderation-queue-to-be-approved_003f">3.2 How long does it take for my message in the moderation queue to be approved?</a></li>
<li><a id="toc-How-do-I-delete-my-message-in-the-moderation-queue_003f-1" href="#How-do-I-delete-my-message-in-the-moderation-queue_003f-1">3.3 How do I delete my message in the moderation queue?</a></li>
</ul></li>
<li><a id="toc-Archives" href="#Archives">4 Archives</a>
<ul class="toc-numbered-mark">
<li><a id="toc-Where-are-the-archives_003f-1" href="#Where-are-the-archives_003f-1">4.1 Where are the archives?</a></li>
<li><a id="toc-How-do-I-reply-to-a-message-in-the-archives_003f" href="#How-do-I-reply-to-a-message-in-the-archives_003f">4.2 How do I reply to a message in the archives?</a></li>
<li><a id="toc-How-do-I-search-the-archives_003f" href="#How-do-I-search-the-archives_003f">4.3 How do I search the archives?</a></li>
</ul></li>
<li><a id="toc-Other" href="#Other">5 Other</a>
<ul class="toc-numbered-mark">
<li><a id="toc-Is-there-an-alternative-to-the-mailing-list_003f" href="#Is-there-an-alternative-to-the-mailing-list_003f">5.1 Is there an alternative to the mailing list?</a></li>
<li><a id="toc-What-is-top_002dposting_003f-1" href="#What-is-top_002dposting_003f-1">5.2 What is top-posting?</a></li>
<li><a id="toc-What-is-the-message-size-limit_003f-1" href="#What-is-the-message-size-limit_003f-1">5.3 What is the message size limit?</a></li>
<li><a id="toc-Where-can-I-upload-sample-files_003f" href="#Where-can-I-upload-sample-files_003f">5.4 Where can I upload sample files?</a></li>
<li><a id="toc-Will-I-receive-spam-if-I-send-and_002for-subscribe-to-a-mailing-list_003f" href="#Will-I-receive-spam-if-I-send-and_002for-subscribe-to-a-mailing-list_003f">5.5 Will I receive spam if I send and/or subscribe to a mailing list?</a></li>
<li><a id="toc-How-do-I-filter-mailing-list-messages_003f" href="#How-do-I-filter-mailing-list-messages_003f">5.6 How do I filter mailing list messages?</a></li>
<li><a id="toc-How-do-I-disable-mail-delivery-without-unsubscribing_003f-1" href="#How-do-I-disable-mail-delivery-without-unsubscribing_003f-1">5.7 How do I disable mail delivery without unsubscribing?</a></li>
<li><a id="toc-Why-is-the-mailing-list-munging-my-address_003f-1" href="#Why-is-the-mailing-list-munging-my-address_003f-1">5.8 Why is the mailing list munging my address?</a></li>
</ul></li>
<li><a id="toc-Rules-and-Etiquette" href="#Rules-and-Etiquette">6 Rules and Etiquette</a>
<ul class="toc-numbered-mark">
<li><a id="toc-What-are-the-rules-and-the-proper-etiquette_003f" href="#What-are-the-rules-and-the-proper-etiquette_003f">6.1 What are the rules and the proper etiquette?</a></li>
</ul></li>
<li><a id="toc-Help" href="#Help">7 Help</a>
<ul class="toc-numbered-mark">
<li><a id="toc-Why-am-I-not-receiving-any-messages_003f" href="#Why-am-I-not-receiving-any-messages_003f">7.1 Why am I not receiving any messages?</a></li>
<li><a id="toc-Why-are-my-sent-messages-not-showing-up_003f" href="#Why-are-my-sent-messages-not-showing-up_003f">7.2 Why are my sent messages not showing up?</a></li>
<li><a id="toc-Why-do-I-keep-getting-unsubscribed-from-ffmpeg_002ddevel_003f-1" href="#Why-do-I-keep-getting-unsubscribed-from-ffmpeg_002ddevel_003f-1">7.3 Why do I keep getting unsubscribed from ffmpeg-devel?</a></li>
<li><a id="toc-Who-do-I-contact-if-I-have-a-problem-with-the-mailing-list_003f-1" href="#Who-do-I-contact-if-I-have-a-problem-with-the-mailing-list_003f-1">7.4 Who do I contact if I have a problem with the mailing list?</a></li>
</ul></li>
</ul>
</div>
</div>
<div class="chapter-level-extent" id="General-Questions">
<h2 class="chapter">1 General Questions</h2>
<ul class="mini-toc">
<li><a href="#What-is-a-mailing-list_003f" accesskey="1">What is a mailing list?</a></li>
<li><a href="#What-type-of-questions-can-I-ask_003f" accesskey="2">What type of questions can I ask?</a></li>
<li><a href="#How-do-I-ask-a-question-or-send-a-message-to-a-mailing-list_003f-1" accesskey="3">How do I ask a question or send a message to a mailing list?</a></li>
</ul>
<div class="section-level-extent" id="What-is-a-mailing-list_003f">
<h3 class="section">1.1 What is a mailing list?</h3>
<p>A mailing list is not much different than emailing someone, but the
main difference is that your message is received by everyone who
subscribes to the list. It is somewhat like a forum but in email form.
</p>
<p>See the <a class="url" href="https://lists.ffmpeg.org/pipermail/ffmpeg-user/">ffmpeg-user archives</a>
for examples.
</p>
</div>
<div class="section-level-extent" id="What-type-of-questions-can-I-ask_003f">
<h3 class="section">1.2 What type of questions can I ask?</h3>
<ul class="itemize mark-bullet">
<li><a class="url" href="https://lists.ffmpeg.org/mailman/listinfo/ffmpeg-user/">ffmpeg-user</a>:
For questions involving unscripted usage or compilation of the FFmpeg
command-line tools (<code class="command">ffmpeg</code>, <code class="command">ffprobe</code>, <code class="command">ffplay</code>).
</li><li><a class="url" href="https://lists.ffmpeg.org/mailman/listinfo/libav-user/">libav-user</a>:
For questions involving the FFmpeg libav* libraries (libavcodec,
libavformat, libavfilter, etc).
</li><li><a class="url" href="https://lists.ffmpeg.org/mailman/listinfo/ffmpeg-devel/">ffmpeg-devel</a>:
For discussions involving the development of FFmpeg and for submitting
patches. User questions should be asked at ffmpeg-user or libav-user.
</li></ul>
<p>To report a bug see <a class="url" href="https://ffmpeg.org/bugreports.html">https://ffmpeg.org/bugreports.html</a>.
</p>
<p>We cannot provide help for scripts and/or third-party tools.
</p>
<a class="anchor" id="How-do-I-ask-a-question-or-send-a-message-to-a-mailing-list_003f"></a></div>
<div class="section-level-extent" id="How-do-I-ask-a-question-or-send-a-message-to-a-mailing-list_003f-1">
<h3 class="section">1.3 How do I ask a question or send a message to a mailing list?</h3>
<p>First you must <a class="ref" href="#How-do-I-subscribe_003f">subscribe</a>. Then all you have to do is
send an email:
</p>
<ul class="itemize mark-bullet">
<li>Email <a class="email" href="mailto:ffmpeg-user@ffmpeg.org">ffmpeg-user@ffmpeg.org</a> to send a message to the
ffmpeg-user mailing list.
</li><li>Email <a class="email" href="mailto:libav-user@ffmpeg.org">libav-user@ffmpeg.org</a> to send a message to the
libav-user mailing list.
</li><li>Email <a class="email" href="mailto:ffmpeg-devel@ffmpeg.org">ffmpeg-devel@ffmpeg.org</a> to send a message to the
ffmpeg-devel mailing list.
</li></ul>
</div>
</div>
<div class="chapter-level-extent" id="Subscribing-_002f-Unsubscribing">
<h2 class="chapter">2 Subscribing / Unsubscribing</h2>
<a class="anchor" id="How-do-I-subscribe_003f"></a><ul class="mini-toc">
<li><a href="#How-do-I-subscribe_003f-1" accesskey="1">How do I subscribe?</a></li>
<li><a href="#How-do-I-unsubscribe_003f" accesskey="2">How do I unsubscribe?</a></li>
</ul>
<div class="section-level-extent" id="How-do-I-subscribe_003f-1">
<h3 class="section">2.1 How do I subscribe?</h3>
<p>Email <a class="email" href="mailto:ffmpeg-user-request@ffmpeg.org">ffmpeg-user-request@ffmpeg.org</a> with the subject
<em class="emph">subscribe</em>.
</p>
<p>Or visit the <a class="url" href="https://lists.ffmpeg.org/mailman/listinfo/ffmpeg-user/">ffmpeg-user mailing list info page</a>
and refer to the <em class="emph">Subscribing to ffmpeg-user</em> section.
</p>
<p>The process is the same for the other mailing lists.
</p>
</div>
<div class="section-level-extent" id="How-do-I-unsubscribe_003f">
<h3 class="section">2.2 How do I unsubscribe?</h3>
<p>Email <a class="email" href="mailto:ffmpeg-user-request@ffmpeg.org">ffmpeg-user-request@ffmpeg.org</a> with subject <em class="emph">unsubscribe</em>.
</p>
<p>Or visit the <a class="url" href="https://lists.ffmpeg.org/mailman/listinfo/ffmpeg-user/">ffmpeg-user mailing list info page</a>,
scroll to bottom of page, enter your email address in the box, and click
the <em class="emph">Unsubscribe or edit options</em> button.
</p>
<p>The process is the same for the other mailing lists.
</p>
<p>Please avoid asking a mailing list admin to unsubscribe you unless you
are absolutely unable to do so by yourself. See <a class="ref" href="#Who-do-I-contact-if-I-have-a-problem-with-the-mailing-list_003f">Who do I contact if I have a problem with the mailing list?</a>
</p>
<p>Note that it is possible to temporarily halt message delivery (vacation mode).
See <a class="ref" href="#How-do-I-disable-mail-delivery-without-unsubscribing_003f">How do I disable mail delivery without unsubscribing?</a>
</p>
</div>
</div>
<div class="chapter-level-extent" id="Moderation-Queue">
<h2 class="chapter">3 Moderation Queue</h2>
<a class="anchor" id="Why-is-my-message-awaiting-moderator-approval_003f"></a><ul class="mini-toc">
<li><a href="#Why-is-my-message-awaiting-moderator-approval_003f-1" accesskey="1">Why is my message awaiting moderator approval?</a></li>
<li><a href="#How-long-does-it-take-for-my-message-in-the-moderation-queue-to-be-approved_003f" accesskey="2">How long does it take for my message in the moderation queue to be approved?</a></li>
<li><a href="#How-do-I-delete-my-message-in-the-moderation-queue_003f-1" accesskey="3">How do I delete my message in the moderation queue?</a></li>
</ul>
<div class="section-level-extent" id="Why-is-my-message-awaiting-moderator-approval_003f-1">
<h3 class="section">3.1 Why is my message awaiting moderator approval?</h3>
<p>Some messages are automatically held in the <em class="emph">moderation queue</em> and
must be manually approved by a mailing list admin:
</p>
<p>These are:
</p>
<ul class="itemize mark-bullet">
<li>Messages that exceed the <a class="ref" href="#What-is-the-message-size-limit_003f">message size limit</a>.
</li><li>Messages from users whose accounts have been set with the <em class="emph">moderation flag</em>
(very rarely occurs, but may if a user repeatedly ignores the rules
or is abusive towards others).
</li></ul>
</div>
<div class="section-level-extent" id="How-long-does-it-take-for-my-message-in-the-moderation-queue-to-be-approved_003f">
<h3 class="section">3.2 How long does it take for my message in the moderation queue to be approved?</h3>
<p>The queue is not checked on a regular basis. You can ask on the
<code class="t">#ffmpeg-devel</code> IRC channel on Libera Chat for someone to approve your message.
</p>
<a class="anchor" id="How-do-I-delete-my-message-in-the-moderation-queue_003f"></a></div>
<div class="section-level-extent" id="How-do-I-delete-my-message-in-the-moderation-queue_003f-1">
<h3 class="section">3.3 How do I delete my message in the moderation queue?</h3>
<p>You should have received an email with the subject <em class="emph">Your message to &lt;mailing list name&gt; awaits moderator approval</em>.
A link is in the message that will allow you to delete your message
unless a mailing list admin already approved or rejected it.
</p>
</div>
</div>
<div class="chapter-level-extent" id="Archives">
<h2 class="chapter">4 Archives</h2>
<a class="anchor" id="Where-are-the-archives_003f"></a><ul class="mini-toc">
<li><a href="#Where-are-the-archives_003f-1" accesskey="1">Where are the archives?</a></li>
<li><a href="#How-do-I-reply-to-a-message-in-the-archives_003f" accesskey="2">How do I reply to a message in the archives?</a></li>
<li><a href="#How-do-I-search-the-archives_003f" accesskey="3">How do I search the archives?</a></li>
</ul>
<div class="section-level-extent" id="Where-are-the-archives_003f-1">
<h3 class="section">4.1 Where are the archives?</h3>
<p>See the <em class="emph">Archives</em> section on the <a class="url" href="https://ffmpeg.org/contact.html">FFmpeg Contact</a>
page for links to all FFmpeg mailing list archives.
</p>
<p>Note that the archives are split by month. Discussions that span
several months will be split into separate months in the archives.
</p>
</div>
<div class="section-level-extent" id="How-do-I-reply-to-a-message-in-the-archives_003f">
<h3 class="section">4.2 How do I reply to a message in the archives?</h3>
<p>Click the email link at the top of the message just under the subject
title. The link will provide the proper headers to keep the message
within the thread.
</p>
<p>Note that you must be subscribed to send a message to the ffmpeg-user or
libav-user mailing lists.
</p>
</div>
<div class="section-level-extent" id="How-do-I-search-the-archives_003f">
<h3 class="section">4.3 How do I search the archives?</h3>
<p>Perform a site search using your favorite search engine. Example:
</p>
<p><code class="t">site:lists.ffmpeg.org/pipermail/ffmpeg-user/ &quot;search term&quot;</code>
</p>
</div>
</div>
<div class="chapter-level-extent" id="Other">
<h2 class="chapter">5 Other</h2>
<ul class="mini-toc">
<li><a href="#Is-there-an-alternative-to-the-mailing-list_003f" accesskey="1">Is there an alternative to the mailing list?</a></li>
<li><a href="#What-is-top_002dposting_003f-1" accesskey="2">What is top-posting?</a></li>
<li><a href="#What-is-the-message-size-limit_003f-1" accesskey="3">What is the message size limit?</a></li>
<li><a href="#Where-can-I-upload-sample-files_003f" accesskey="4">Where can I upload sample files?</a></li>
<li><a href="#Will-I-receive-spam-if-I-send-and_002for-subscribe-to-a-mailing-list_003f" accesskey="5">Will I receive spam if I send and/or subscribe to a mailing list?</a></li>
<li><a href="#How-do-I-filter-mailing-list-messages_003f" accesskey="6">How do I filter mailing list messages?</a></li>
<li><a href="#How-do-I-disable-mail-delivery-without-unsubscribing_003f-1" accesskey="7">How do I disable mail delivery without unsubscribing?</a></li>
<li><a href="#Why-is-the-mailing-list-munging-my-address_003f-1" accesskey="8">Why is the mailing list munging my address?</a></li>
</ul>
<div class="section-level-extent" id="Is-there-an-alternative-to-the-mailing-list_003f">
<h3 class="section">5.1 Is there an alternative to the mailing list?</h3>
<p>You can ask for help in the official <code class="t">#ffmpeg</code> IRC channel on Libera Chat.
</p>
<p>Some users prefer the third-party <a class="url" href="http://www.ffmpeg-archive.org/">Nabble</a>
interface which presents the mailing lists in a typical forum layout.
</p>
<p>There are also numerous third-party help sites such as
<a class="url" href="https://superuser.com/tags/ffmpeg">Super User</a> and
<a class="url" href="https://www.reddit.com/r/ffmpeg/">r/ffmpeg on reddit</a>.
</p>
<a class="anchor" id="What-is-top_002dposting_003f"></a></div>
<div class="section-level-extent" id="What-is-top_002dposting_003f-1">
<h3 class="section">5.2 What is top-posting?</h3>
<p>See <a class="url" href="https://en.wikipedia.org/wiki/Posting_style#Top-posting">https://en.wikipedia.org/wiki/Posting_style#Top-posting</a>.
</p>
<p>Instead, use trimmed interleaved/inline replies (<a class="url" href="https://lists.ffmpeg.org/pipermail/ffmpeg-user/2017-April/035849.html">example</a>).
</p>
<a class="anchor" id="What-is-the-message-size-limit_003f"></a></div>
<div class="section-level-extent" id="What-is-the-message-size-limit_003f-1">
<h3 class="section">5.3 What is the message size limit?</h3>
<p>The message size limit is 1000 kilobytes. Please provide links to larger files
instead of attaching them.
</p>
</div>
<div class="section-level-extent" id="Where-can-I-upload-sample-files_003f">
<h3 class="section">5.4 Where can I upload sample files?</h3>
<p>Anywhere that is not too annoying for us to use.
</p>
<p>Google Drive and Dropbox are acceptable if you need a file host, and
<a class="url" href="https://0x0.st/">0x0.st</a> is good for files under 256 MiB.
</p>
<p>Small, short samples are preferred if possible.
</p>
</div>
<div class="section-level-extent" id="Will-I-receive-spam-if-I-send-and_002for-subscribe-to-a-mailing-list_003f">
<h3 class="section">5.5 Will I receive spam if I send and/or subscribe to a mailing list?</h3>
<p>Highly unlikely.
</p>
<ul class="itemize mark-bullet">
<li>The list of subscribed users is not public.
</li><li>Email addresses in the archives are obfuscated.
</li><li>Several unique test email accounts were utilized and none have yet
received any spam.
</li></ul>
<p>However, you may see a spam in the mailing lists on rare occasions:
</p>
<ul class="itemize mark-bullet">
<li>Spam in the moderation queue may be accidentally approved due to human
error.
</li><li>There have been a few messages from subscribed users who had their own
email addresses hacked and spam messages from (or appearing to be from)
the hacked account were sent to their contacts (a mailing list being a
contact in these cases).
</li><li>If you are subscribed to the bug tracker mailing list (ffmpeg-trac) you
may see the occasional spam as a false bug report, but we take measures
to try to prevent this.
</li></ul>
</div>
<div class="section-level-extent" id="How-do-I-filter-mailing-list-messages_003f">
<h3 class="section">5.6 How do I filter mailing list messages?</h3>
<p>Use the <em class="emph">List-Id</em>. For example, the ffmpeg-user mailing list is
<code class="t">ffmpeg-user.ffmpeg.org</code>. You can view the List-Id in the raw message
or headers.
</p>
<p>You can then filter the mailing list messages to their own folder.
</p>
<a class="anchor" id="How-do-I-disable-mail-delivery-without-unsubscribing_003f"></a></div>
<div class="section-level-extent" id="How-do-I-disable-mail-delivery-without-unsubscribing_003f-1">
<h3 class="section">5.7 How do I disable mail delivery without unsubscribing?</h3>
<p>Sometimes you may want to temporarily stop receiving all mailing list
messages. This &quot;vacation mode&quot; is simple to do:
</p>
<ol class="enumerate">
<li> Go to the <a class="url" href="https://lists.ffmpeg.org/mailman/listinfo/ffmpeg-user/">ffmpeg-user mailing list info page</a>
</li><li> Enter your email address in the box at very bottom of the page and click the
<em class="emph">Unsubscribe or edit options</em> box.
</li><li> Enter your password and click the <em class="emph">Log in</em> button.
</li><li> Look for the <em class="emph">Mail delivery</em> option. Here you can disable/enable mail
delivery. If you check <em class="emph">Set globally</em> it will apply your choice to all
other FFmpeg mailing lists you are subscribed to.
</li></ol>
<p>Alternatively, from your subscribed address, send a message to <a class="email" href="mailto:ffmpeg-user-request@ffmpeg.org">ffmpeg-user-request@ffmpeg.org</a>
with the subject <em class="emph">set delivery off</em>. To re-enable mail delivery send a
message to <a class="email" href="mailto:ffmpeg-user-request@ffmpeg.org">ffmpeg-user-request@ffmpeg.org</a> with the subject
<em class="emph">set delivery on</em>.
</p>
<a class="anchor" id="Why-is-the-mailing-list-munging-my-address_003f"></a></div>
<div class="section-level-extent" id="Why-is-the-mailing-list-munging-my-address_003f-1">
<h3 class="section">5.8 Why is the mailing list munging my address?</h3>
<p>This is due to subscribers that use an email service with a DMARC reject policy
which adds difficulties to mailing list operators.
</p>
<p>The mailing list must re-write (munge) the <em class="emph">From:</em> header for such users;
otherwise their email service will reject and bounce the message resulting in
automatic unsubscribing from the mailing list.
</p>
<p>When sending a message these users will see <em class="emph">via &lt;mailing list name&gt;</em>
added to their name and the <em class="emph">From:</em> address munged to the address of
the particular mailing list.
</p>
<p>If you want to avoid this then please use a different email service.
</p>
<p>Note that ffmpeg-devel does not apply any munging as it causes issues with
patch authorship. As a result users with an email service with a DMARC reject
policy may be automatically unsubscribed due to rejected and bounced messages.
</p>
</div>
</div>
<div class="chapter-level-extent" id="Rules-and-Etiquette">
<h2 class="chapter">6 Rules and Etiquette</h2>
<ul class="mini-toc">
<li><a href="#What-are-the-rules-and-the-proper-etiquette_003f" accesskey="1">What are the rules and the proper etiquette?</a></li>
</ul>
<div class="section-level-extent" id="What-are-the-rules-and-the-proper-etiquette_003f">
<h3 class="section">6.1 What are the rules and the proper etiquette?</h3>
<p>There may seem to be many things to remember, but we want to help and
following these guidelines will allow you to get answers more quickly
and help avoid getting ignored.
</p>
<ul class="itemize mark-bullet">
<li>Always show your actual, unscripted <code class="command">ffmpeg</code> command and the
complete, uncut console output from your command.
</li><li>Use the most simple and minimal command that still shows the issue you
are encountering.
</li><li>Provide all necessary information so others can attempt to duplicate
your issue. This includes the actual command, complete uncut console
output, and any inputs that are required to duplicate the issue.
</li><li>Use the latest <code class="command">ffmpeg</code> build you can get. See the <a class="url" href="https://ffmpeg.org/download.html">FFmpeg Download</a>
page for links to recent builds for Linux, macOS, and Windows. Or
compile from the current git master branch.
</li><li>Avoid <a class="url" href="https://en.wikipedia.org/wiki/Posting_style#Top-posting">top-posting</a>.
Also see <a class="ref" href="#What-is-top_002dposting_003f">What is top-posting?</a>
</li><li>Avoid hijacking threads. Thread hijacking is replying to a message and
changing the subject line to something unrelated to the original thread.
Most email clients will still show the renamed message under the
original thread. This can be confusing and these types of messages are
often ignored.
</li><li>Do not send screenshots. Copy and paste console text instead of making
screenshots of the text.
</li><li>Avoid sending email disclaimers and legalese if possible as this is a
public list.
</li><li>Avoid using the <code class="code">-loglevel debug</code>, <code class="code">-loglevel quiet</code>, and
<code class="command">-hide_banner</code> options unless requested to do so.
</li><li>If you attach files avoid compressing small files. Uncompressed is
preferred.
</li><li>Please do not send HTML-only messages. The mailing list will ignore the
HTML component of your message. Most mail clients will automatically
include a text component: this is what the mailing list will use.
</li><li>Configuring your mail client to break lines after 70 or so characters is
recommended.
</li><li>Avoid sending the same message to multiple mailing lists.
</li><li>Please follow our <a class="url" href="https://ffmpeg.org/community.html#Code-of-conduct">Code of Conduct</a>.
</li></ul>
</div>
</div>
<div class="chapter-level-extent" id="Help">
<h2 class="chapter">7 Help</h2>
<ul class="mini-toc">
<li><a href="#Why-am-I-not-receiving-any-messages_003f" accesskey="1">Why am I not receiving any messages?</a></li>
<li><a href="#Why-are-my-sent-messages-not-showing-up_003f" accesskey="2">Why are my sent messages not showing up?</a></li>
<li><a href="#Why-do-I-keep-getting-unsubscribed-from-ffmpeg_002ddevel_003f-1" accesskey="3">Why do I keep getting unsubscribed from ffmpeg-devel?</a></li>
<li><a href="#Who-do-I-contact-if-I-have-a-problem-with-the-mailing-list_003f-1" accesskey="4">Who do I contact if I have a problem with the mailing list?</a></li>
</ul>
<div class="section-level-extent" id="Why-am-I-not-receiving-any-messages_003f">
<h3 class="section">7.1 Why am I not receiving any messages?</h3>
<p>Some email providers have blacklists or spam filters that block or mark
the mailing list messages as false positives. Unfortunately, the user is
often not aware of this and is often out of their control.
</p>
<p>When possible we attempt to notify the provider to be removed from the
blacklists or filters.
</p>
</div>
<div class="section-level-extent" id="Why-are-my-sent-messages-not-showing-up_003f">
<h3 class="section">7.2 Why are my sent messages not showing up?</h3>
<p>Excluding <a class="ref" href="#Why-is-my-message-awaiting-moderator-approval_003f">messages that are held in the moderation queue</a>
there are a few other reasons why your messages may fail to appear:
</p>
<ul class="itemize mark-bullet">
<li>HTML-only messages are ignored by the mailing lists. Most mail clients
automatically include a text component alongside HTML email: this is what
the mailing list will use. If it does not then consider your client to be
broken, because sending a text component along with the HTML component to
form a multi-part message is recommended by email standards.
</li><li>Check your spam folder.
</li></ul>
<a class="anchor" id="Why-do-I-keep-getting-unsubscribed-from-ffmpeg_002ddevel_003f"></a></div>
<div class="section-level-extent" id="Why-do-I-keep-getting-unsubscribed-from-ffmpeg_002ddevel_003f-1">
<h3 class="section">7.3 Why do I keep getting unsubscribed from ffmpeg-devel?</h3>
<p>Users with an email service that has a DMARC reject or quarantine policy may be
automatically unsubscribed from the ffmpeg-devel mailing list due to the mailing
list messages being continuously rejected and bounced back.
</p>
<p>Consider using a different email service.
</p>
<a class="anchor" id="Who-do-I-contact-if-I-have-a-problem-with-the-mailing-list_003f"></a></div>
<div class="section-level-extent" id="Who-do-I-contact-if-I-have-a-problem-with-the-mailing-list_003f-1">
<h3 class="section">7.4 Who do I contact if I have a problem with the mailing list?</h3>
<p>Send a message to <a class="email" href="mailto:ffmpeg-user-owner@ffmpeg.org">ffmpeg-user-owner@ffmpeg.org</a>.
</p>
</div>
</div>
</div>
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<title>NUT</title>
<meta name="description" content="NUT">
<meta name="keywords" content="NUT">
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<body lang="en">
<div class="top-level-extent" id="SEC_Top">
<div class="element-contents" id="SEC_Contents">
<h2 class="contents-heading">Table of Contents</h2>
<div class="contents">
<ul class="toc-numbered-mark">
<li><a id="toc-Description" href="#Description">1 Description</a></li>
<li><a id="toc-Modes" href="#Modes">2 Modes</a>
<ul class="toc-numbered-mark">
<li><a id="toc-BROADCAST" href="#BROADCAST">2.1 BROADCAST</a></li>
<li><a id="toc-PIPE" href="#PIPE">2.2 PIPE</a></li>
</ul></li>
<li><a id="toc-Container_002dspecific-codec-tags" href="#Container_002dspecific-codec-tags">3 Container-specific codec tags</a>
<ul class="toc-numbered-mark">
<li><a id="toc-Generic-raw-YUVA-formats" href="#Generic-raw-YUVA-formats">3.1 Generic raw YUVA formats</a></li>
<li><a id="toc-Raw-Audio" href="#Raw-Audio">3.2 Raw Audio</a></li>
<li><a id="toc-Subtitles" href="#Subtitles">3.3 Subtitles</a></li>
<li><a id="toc-Raw-Data" href="#Raw-Data">3.4 Raw Data</a></li>
<li><a id="toc-Codecs" href="#Codecs">3.5 Codecs</a></li>
</ul></li>
</ul>
</div>
</div>
<div class="chapter-level-extent" id="Description">
<h2 class="chapter">1 Description</h2>
<p>NUT is a low overhead generic container format. It stores audio, video,
subtitle and user-defined streams in a simple, yet efficient, way.
</p>
<p>It was created by a group of FFmpeg and MPlayer developers in 2003
and was finalized in 2008.
</p>
<p>The official nut specification is at svn://svn.mplayerhq.hu/nut
In case of any differences between this text and the official specification,
the official specification shall prevail.
</p>
</div>
<div class="chapter-level-extent" id="Modes">
<h2 class="chapter">2 Modes</h2>
<p>NUT has some variants signaled by using the flags field in its main header.
</p>
<table class="multitable">
<tbody><tr><td width="40%">BROADCAST</td><td width="40%">Extend the syncpoint to report the sender wallclock</td></tr>
<tr><td width="40%">PIPE</td><td width="40%">Omit completely the syncpoint</td></tr>
</tbody>
</table>
<ul class="mini-toc">
<li><a href="#BROADCAST" accesskey="1">BROADCAST</a></li>
<li><a href="#PIPE" accesskey="2">PIPE</a></li>
</ul>
<div class="section-level-extent" id="BROADCAST">
<h3 class="section">2.1 BROADCAST</h3>
<p>The BROADCAST variant provides a secondary time reference to facilitate
detecting endpoint latency and network delays.
It assumes all the endpoint clocks are synchronized.
To be used in real-time scenarios.
</p>
</div>
<div class="section-level-extent" id="PIPE">
<h3 class="section">2.2 PIPE</h3>
<p>The PIPE variant assumes NUT is used as non-seekable intermediate container,
by not using syncpoint removes unneeded overhead and reduces the overall
memory usage.
</p>
</div>
</div>
<div class="chapter-level-extent" id="Container_002dspecific-codec-tags">
<h2 class="chapter">3 Container-specific codec tags</h2>
<ul class="mini-toc">
<li><a href="#Generic-raw-YUVA-formats" accesskey="1">Generic raw YUVA formats</a></li>
<li><a href="#Raw-Audio" accesskey="2">Raw Audio</a></li>
<li><a href="#Subtitles" accesskey="3">Subtitles</a></li>
<li><a href="#Raw-Data" accesskey="4">Raw Data</a></li>
<li><a href="#Codecs" accesskey="5">Codecs</a></li>
</ul>
<div class="section-level-extent" id="Generic-raw-YUVA-formats">
<h3 class="section">3.1 Generic raw YUVA formats</h3>
<p>Since many exotic planar YUVA pixel formats are not considered by
the AVI/QuickTime FourCC lists, the following scheme is adopted for
representing them.
</p>
<p>The first two bytes can contain the values:
Y1 = only Y
Y2 = Y+A
Y3 = YUV
Y4 = YUVA
</p>
<p>The third byte represents the width and height chroma subsampling
values for the UV planes, that is the amount to shift the luma
width/height right to find the chroma width/height.
</p>
<p>The fourth byte is the number of bits used (8, 16, ...).
</p>
<p>If the order of bytes is inverted, that means that each component has
to be read big-endian.
</p>
</div>
<div class="section-level-extent" id="Raw-Audio">
<h3 class="section">3.2 Raw Audio</h3>
<table class="multitable">
<tbody><tr><td width="40%">ALAW</td><td width="40%">A-LAW</td></tr>
<tr><td width="40%">ULAW</td><td width="40%">MU-LAW</td></tr>
<tr><td width="40%">P&lt;type&gt;&lt;interleaving&gt;&lt;bits&gt;</td><td width="40%">little-endian PCM</td></tr>
<tr><td width="40%">&lt;bits&gt;&lt;interleaving&gt;&lt;type&gt;P</td><td width="40%">big-endian PCM</td></tr>
</tbody>
</table>
<p>&lt;type&gt; is S for signed integer, U for unsigned integer, F for IEEE float
&lt;interleaving&gt; is D for default, P is for planar.
&lt;bits&gt; is 8/16/24/32
</p>
<div class="example">
<pre class="example-preformatted">PFD[32] would for example be signed 32 bit little-endian IEEE float
</pre></div>
</div>
<div class="section-level-extent" id="Subtitles">
<h3 class="section">3.3 Subtitles</h3>
<table class="multitable">
<tbody><tr><td width="40%">UTF8</td><td width="40%">Raw UTF-8</td></tr>
<tr><td width="40%">SSA[0]</td><td width="40%">SubStation Alpha</td></tr>
<tr><td width="40%">DVDS</td><td width="40%">DVD subtitles</td></tr>
<tr><td width="40%">DVBS</td><td width="40%">DVB subtitles</td></tr>
</tbody>
</table>
</div>
<div class="section-level-extent" id="Raw-Data">
<h3 class="section">3.4 Raw Data</h3>
<table class="multitable">
<tbody><tr><td width="40%">UTF8</td><td width="40%">Raw UTF-8</td></tr>
</tbody>
</table>
</div>
<div class="section-level-extent" id="Codecs">
<h3 class="section">3.5 Codecs</h3>
<table class="multitable">
<tbody><tr><td width="40%">3IV1</td><td width="40%">non-compliant MPEG-4 generated by old 3ivx</td></tr>
<tr><td width="40%">ASV1</td><td width="40%">Asus Video</td></tr>
<tr><td width="40%">ASV2</td><td width="40%">Asus Video 2</td></tr>
<tr><td width="40%">CVID</td><td width="40%">Cinepak</td></tr>
<tr><td width="40%">CYUV</td><td width="40%">Creative YUV</td></tr>
<tr><td width="40%">DIVX</td><td width="40%">non-compliant MPEG-4 generated by old DivX</td></tr>
<tr><td width="40%">DUCK</td><td width="40%">Truemotion 1</td></tr>
<tr><td width="40%">FFV1</td><td width="40%">FFmpeg video 1</td></tr>
<tr><td width="40%">FFVH</td><td width="40%">FFmpeg Huffyuv</td></tr>
<tr><td width="40%">H261</td><td width="40%">ITU H.261</td></tr>
<tr><td width="40%">H262</td><td width="40%">ITU H.262</td></tr>
<tr><td width="40%">H263</td><td width="40%">ITU H.263</td></tr>
<tr><td width="40%">H264</td><td width="40%">ITU H.264</td></tr>
<tr><td width="40%">HFYU</td><td width="40%">Huffyuv</td></tr>
<tr><td width="40%">I263</td><td width="40%">Intel H.263</td></tr>
<tr><td width="40%">IV31</td><td width="40%">Indeo 3.1</td></tr>
<tr><td width="40%">IV32</td><td width="40%">Indeo 3.2</td></tr>
<tr><td width="40%">IV50</td><td width="40%">Indeo 5.0</td></tr>
<tr><td width="40%">LJPG</td><td width="40%">ITU JPEG (lossless)</td></tr>
<tr><td width="40%">MJLS</td><td width="40%">ITU JPEG-LS</td></tr>
<tr><td width="40%">MJPG</td><td width="40%">ITU JPEG</td></tr>
<tr><td width="40%">MPG4</td><td width="40%">MS MPEG-4v1 (not ISO MPEG-4)</td></tr>
<tr><td width="40%">MP42</td><td width="40%">MS MPEG-4v2</td></tr>
<tr><td width="40%">MP43</td><td width="40%">MS MPEG-4v3</td></tr>
<tr><td width="40%">MP4V</td><td width="40%">ISO MPEG-4 Part 2 Video (from old encoders)</td></tr>
<tr><td width="40%">mpg1</td><td width="40%">ISO MPEG-1 Video</td></tr>
<tr><td width="40%">mpg2</td><td width="40%">ISO MPEG-2 Video</td></tr>
<tr><td width="40%">MRLE</td><td width="40%">MS RLE</td></tr>
<tr><td width="40%">MSVC</td><td width="40%">MS Video 1</td></tr>
<tr><td width="40%">RT21</td><td width="40%">Indeo 2.1</td></tr>
<tr><td width="40%">RV10</td><td width="40%">RealVideo 1.0</td></tr>
<tr><td width="40%">RV20</td><td width="40%">RealVideo 2.0</td></tr>
<tr><td width="40%">RV30</td><td width="40%">RealVideo 3.0</td></tr>
<tr><td width="40%">RV40</td><td width="40%">RealVideo 4.0</td></tr>
<tr><td width="40%">SNOW</td><td width="40%">FFmpeg Snow</td></tr>
<tr><td width="40%">SVQ1</td><td width="40%">Sorenson Video 1</td></tr>
<tr><td width="40%">SVQ3</td><td width="40%">Sorenson Video 3</td></tr>
<tr><td width="40%">theo</td><td width="40%">Xiph Theora</td></tr>
<tr><td width="40%">TM20</td><td width="40%">Truemotion 2.0</td></tr>
<tr><td width="40%">UMP4</td><td width="40%">non-compliant MPEG-4 generated by UB Video MPEG-4</td></tr>
<tr><td width="40%">VCR1</td><td width="40%">ATI VCR1</td></tr>
<tr><td width="40%">VP30</td><td width="40%">VP 3.0</td></tr>
<tr><td width="40%">VP31</td><td width="40%">VP 3.1</td></tr>
<tr><td width="40%">VP50</td><td width="40%">VP 5.0</td></tr>
<tr><td width="40%">VP60</td><td width="40%">VP 6.0</td></tr>
<tr><td width="40%">VP61</td><td width="40%">VP 6.1</td></tr>
<tr><td width="40%">VP62</td><td width="40%">VP 6.2</td></tr>
<tr><td width="40%">VP70</td><td width="40%">VP 7.0</td></tr>
<tr><td width="40%">WMV1</td><td width="40%">MS WMV7</td></tr>
<tr><td width="40%">WMV2</td><td width="40%">MS WMV8</td></tr>
<tr><td width="40%">WMV3</td><td width="40%">MS WMV9</td></tr>
<tr><td width="40%">WV1F</td><td width="40%">non-compliant MPEG-4 generated by ?</td></tr>
<tr><td width="40%">WVC1</td><td width="40%">VC-1</td></tr>
<tr><td width="40%">XVID</td><td width="40%">non-compliant MPEG-4 generated by old Xvid</td></tr>
<tr><td width="40%">XVIX</td><td width="40%">non-compliant MPEG-4 generated by old Xvid with interlacing bug</td></tr>
</tbody>
</table>
</div>
</div>
</div>
</body>
</html>

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<div class="top-level-extent" id="SEC_Top">
<div class="element-contents" id="SEC_Contents">
<h2 class="contents-heading">Table of Contents</h2>
<div class="contents">
<ul class="toc-numbered-mark">
<li><a id="toc-Unix_002dlike" href="#Unix_002dlike">1 Unix-like</a>
<ul class="toc-numbered-mark">
<li><a id="toc-Advanced-linking-configuration" href="#Advanced-linking-configuration">1.1 Advanced linking configuration</a></li>
<li><a id="toc-BSD" href="#BSD">1.2 BSD</a></li>
<li><a id="toc-_0028Open_0029Solaris" href="#g_t_0028Open_0029Solaris">1.3 (Open)Solaris</a></li>
<li><a id="toc-Darwin-_0028Mac-OS-X_002c-iPhone_0029" href="#Darwin-_0028Mac-OS-X_002c-iPhone_0029">1.4 Darwin (Mac OS X, iPhone)</a></li>
</ul></li>
<li><a id="toc-DOS" href="#DOS">2 DOS</a></li>
<li><a id="toc-OS_002f2" href="#OS_002f2">3 OS/2</a></li>
<li><a id="toc-Windows" href="#Windows">4 Windows</a>
<ul class="toc-numbered-mark">
<li><a id="toc-Native-Windows-compilation-using-MinGW-or-MinGW_002dw64" href="#Native-Windows-compilation-using-MinGW-or-MinGW_002dw64">4.1 Native Windows compilation using MinGW or MinGW-w64</a>
<ul class="toc-numbered-mark">
<li><a id="toc-Native-Windows-compilation-using-MSYS2" href="#Native-Windows-compilation-using-MSYS2">4.1.1 Native Windows compilation using MSYS2</a></li>
</ul></li>
<li><a id="toc-Microsoft-Visual-C_002b_002b-or-Intel-C_002b_002b-Compiler-for-Windows" href="#Microsoft-Visual-C_002b_002b-or-Intel-C_002b_002b-Compiler-for-Windows">4.2 Microsoft Visual C++ or Intel C++ Compiler for Windows</a>
<ul class="toc-numbered-mark">
<li><a id="toc-Linking-to-FFmpeg-with-Microsoft-Visual-C_002b_002b" href="#Linking-to-FFmpeg-with-Microsoft-Visual-C_002b_002b">4.2.1 Linking to FFmpeg with Microsoft Visual C++</a></li>
</ul></li>
<li><a id="toc-Cross-compilation-for-Windows-with-Linux-1" href="#Cross-compilation-for-Windows-with-Linux-1">4.3 Cross compilation for Windows with Linux</a></li>
<li><a id="toc-Compilation-under-Cygwin" href="#Compilation-under-Cygwin">4.4 Compilation under Cygwin</a></li>
<li><a id="toc-Crosscompilation-for-Windows-under-Cygwin" href="#Crosscompilation-for-Windows-under-Cygwin">4.5 Crosscompilation for Windows under Cygwin</a></li>
</ul></li>
</ul>
</div>
</div>
<div class="chapter-level-extent" id="Unix_002dlike">
<h2 class="chapter">1 Unix-like</h2>
<p>Some parts of FFmpeg cannot be built with version 2.15 of the GNU
assembler which is still provided by a few AMD64 distributions. To
make sure your compiler really uses the required version of gas
after a binutils upgrade, run:
</p>
<div class="example">
<pre class="example-preformatted">$(gcc -print-prog-name=as) --version
</pre></div>
<p>If not, then you should install a different compiler that has no
hard-coded path to gas. In the worst case pass <code class="code">--disable-asm</code>
to configure.
</p>
<ul class="mini-toc">
<li><a href="#Advanced-linking-configuration" accesskey="1">Advanced linking configuration</a></li>
<li><a href="#BSD" accesskey="2">BSD</a></li>
<li><a href="#g_t_0028Open_0029Solaris" accesskey="3">(Open)Solaris</a></li>
<li><a href="#Darwin-_0028Mac-OS-X_002c-iPhone_0029" accesskey="4">Darwin (Mac OS X, iPhone)</a></li>
</ul>
<div class="section-level-extent" id="Advanced-linking-configuration">
<h3 class="section">1.1 Advanced linking configuration</h3>
<p>If you compiled FFmpeg libraries statically and you want to use them to
build your own shared library, you may need to force PIC support (with
<code class="code">--enable-pic</code> during FFmpeg configure) and add the following option
to your project LDFLAGS:
</p>
<div class="example">
<pre class="example-preformatted">-Wl,-Bsymbolic
</pre></div>
<p>If your target platform requires position independent binaries, you should
pass the correct linking flag (e.g. <code class="code">-pie</code>) to <code class="code">--extra-ldexeflags</code>.
</p>
</div>
<div class="section-level-extent" id="BSD">
<h3 class="section">1.2 BSD</h3>
<p>BSD make will not build FFmpeg, you need to install and use GNU Make
(<code class="command">gmake</code>).
</p>
</div>
<div class="section-level-extent" id="g_t_0028Open_0029Solaris">
<h3 class="section">1.3 (Open)Solaris</h3>
<p>GNU Make is required to build FFmpeg, so you have to invoke (<code class="command">gmake</code>),
standard Solaris Make will not work. When building with a non-c99 front-end
(gcc, generic suncc) add either <code class="code">--extra-libs=/usr/lib/values-xpg6.o</code>
or <code class="code">--extra-libs=/usr/lib/64/values-xpg6.o</code> to the configure options
since the libc is not c99-compliant by default. The probes performed by
configure may raise an exception leading to the death of configure itself
due to a bug in the system shell. Simply invoke a different shell such as
bash directly to work around this:
</p>
<div class="example">
<pre class="example-preformatted">bash ./configure
</pre></div>
<a class="anchor" id="Darwin"></a></div>
<div class="section-level-extent" id="Darwin-_0028Mac-OS-X_002c-iPhone_0029">
<h3 class="section">1.4 Darwin (Mac OS X, iPhone)</h3>
<p>The toolchain provided with Xcode is sufficient to build the basic
unaccelerated code.
</p>
<p>Mac OS X on PowerPC or ARM (iPhone) requires a preprocessor from
<a class="url" href="https://github.com/FFmpeg/gas-preprocessor">https://github.com/FFmpeg/gas-preprocessor</a> or
<a class="url" href="https://github.com/yuvi/gas-preprocessor">https://github.com/yuvi/gas-preprocessor</a>(currently outdated) to build the optimized
assembly functions. Put the Perl script somewhere
in your PATH, FFmpeg&rsquo;s configure will pick it up automatically.
</p>
<p>Mac OS X on amd64 and x86 requires <code class="command">nasm</code> to build most of the
optimized assembly functions. <a class="uref" href="http://www.finkproject.org/">Fink</a>,
<a class="uref" href="https://wiki.gentoo.org/wiki/Project:Prefix">Gentoo Prefix</a>,
<a class="uref" href="https://mxcl.github.com/homebrew/">Homebrew</a>
or <a class="uref" href="http://www.macports.org">MacPorts</a> can easily provide it.
</p>
</div>
</div>
<div class="chapter-level-extent" id="DOS">
<h2 class="chapter">2 DOS</h2>
<p>Using a cross-compiler is preferred for various reasons.
<a class="url" href="http://www.delorie.com/howto/djgpp/linux-x-djgpp.html">http://www.delorie.com/howto/djgpp/linux-x-djgpp.html</a>
</p>
</div>
<div class="chapter-level-extent" id="OS_002f2">
<h2 class="chapter">3 OS/2</h2>
<p>For information about compiling FFmpeg on OS/2 see
<a class="url" href="http://www.edm2.com/index.php/FFmpeg">http://www.edm2.com/index.php/FFmpeg</a>.
</p>
</div>
<div class="chapter-level-extent" id="Windows">
<h2 class="chapter">4 Windows</h2>
<ul class="mini-toc">
<li><a href="#Native-Windows-compilation-using-MinGW-or-MinGW_002dw64" accesskey="1">Native Windows compilation using MinGW or MinGW-w64</a></li>
<li><a href="#Microsoft-Visual-C_002b_002b-or-Intel-C_002b_002b-Compiler-for-Windows" accesskey="2">Microsoft Visual C++ or Intel C++ Compiler for Windows</a></li>
<li><a href="#Cross-compilation-for-Windows-with-Linux-1" accesskey="3">Cross compilation for Windows with Linux</a></li>
<li><a href="#Compilation-under-Cygwin" accesskey="4">Compilation under Cygwin</a></li>
<li><a href="#Crosscompilation-for-Windows-under-Cygwin" accesskey="5">Crosscompilation for Windows under Cygwin</a></li>
</ul>
<div class="section-level-extent" id="Native-Windows-compilation-using-MinGW-or-MinGW_002dw64">
<h3 class="section">4.1 Native Windows compilation using MinGW or MinGW-w64</h3>
<p>FFmpeg can be built to run natively on Windows using the MinGW-w64
toolchain. Install the latest versions of MSYS2 and MinGW-w64 from
<a class="url" href="http://msys2.github.io/">http://msys2.github.io/</a> and/or <a class="url" href="http://mingw-w64.sourceforge.net/">http://mingw-w64.sourceforge.net/</a>.
You can find detailed installation instructions in the download section and
the FAQ.
</p>
<p>Notes:
</p>
<ul class="itemize mark-bullet">
<li>Building for the MSYS environment is discouraged, MSYS2 provides a full
MinGW-w64 environment through <samp class="file">mingw64_shell.bat</samp> or
<samp class="file">mingw32_shell.bat</samp> that should be used instead of the environment
provided by <samp class="file">msys2_shell.bat</samp>.
</li><li>Building using MSYS2 can be sped up by disabling implicit rules in the
Makefile by calling <code class="code">make -r</code> instead of plain <code class="code">make</code>. This
speed up is close to non-existent for normal one-off builds and is only
noticeable when running make for a second time (for example during
<code class="code">make install</code>).
</li><li>In order to compile FFplay, you must have the MinGW development library
of <a class="uref" href="http://www.libsdl.org/">SDL</a> and <code class="code">pkg-config</code> installed.
</li><li>By using <code class="code">./configure --enable-shared</code> when configuring FFmpeg,
you can build the FFmpeg libraries (e.g. libavutil, libavcodec,
libavformat) as DLLs.
</li></ul>
<ul class="mini-toc">
<li><a href="#Native-Windows-compilation-using-MSYS2" accesskey="1">Native Windows compilation using MSYS2</a></li>
</ul>
<div class="subsection-level-extent" id="Native-Windows-compilation-using-MSYS2">
<h4 class="subsection">4.1.1 Native Windows compilation using MSYS2</h4>
<p>The MSYS2 MinGW-w64 environment provides ready to use toolchains and dependencies
through <code class="command">pacman</code>.
</p>
<p>Make sure to use <samp class="file">mingw64_shell.bat</samp> or <samp class="file">mingw32_shell.bat</samp> to have
the correct MinGW-w64 environment. The default install provides shortcuts to
them under <code class="command">MinGW-w64 Win64 Shell</code> and <code class="command">MinGW-w64 Win32 Shell</code>.
</p>
<div class="example">
<pre class="example-preformatted"># normal msys2 packages
pacman -S make pkgconf diffutils
# mingw-w64 packages and toolchains
pacman -S mingw-w64-x86_64-nasm mingw-w64-x86_64-gcc mingw-w64-x86_64-SDL2
</pre></div>
<p>To target 32 bits replace <code class="code">x86_64</code> with <code class="code">i686</code> in the command above.
</p>
</div>
</div>
<div class="section-level-extent" id="Microsoft-Visual-C_002b_002b-or-Intel-C_002b_002b-Compiler-for-Windows">
<h3 class="section">4.2 Microsoft Visual C++ or Intel C++ Compiler for Windows</h3>
<p>FFmpeg can be built with MSVC 2013 or later.
</p>
<p>You will need the following prerequisites:
</p>
<ul class="itemize mark-bullet">
<li><a class="uref" href="http://msys2.github.io/">MSYS2</a>
</li><li><a class="uref" href="http://www.nasm.us/">NASM</a>
(Also available via MSYS2&rsquo;s package manager.)
</li></ul>
<p>To set up a proper environment in MSYS2, you need to run <code class="code">msys_shell.bat</code> from
the Visual Studio or Intel Compiler command prompt.
</p>
<p>Place <code class="code">yasm.exe</code> somewhere in your <code class="code">PATH</code>.
</p>
<p>Next, make sure any other headers and libs you want to use, such as zlib, are
located in a spot that the compiler can see. Do so by modifying the <code class="code">LIB</code>
and <code class="code">INCLUDE</code> environment variables to include the <strong class="strong">Windows-style</strong>
paths to these directories. Alternatively, you can try to use the
<code class="code">--extra-cflags</code>/<code class="code">--extra-ldflags</code> configure options.
</p>
<p>Finally, run:
</p>
<div class="example">
<pre class="example-preformatted">For MSVC:
./configure --toolchain=msvc
For ICL:
./configure --toolchain=icl
make
make install
</pre></div>
<p>If you wish to compile shared libraries, add <code class="code">--enable-shared</code> to your
configure options. Note that due to the way MSVC and ICL handle DLL imports and
exports, you cannot compile static and shared libraries at the same time, and
enabling shared libraries will automatically disable the static ones.
</p>
<p>Notes:
</p>
<ul class="itemize mark-bullet">
<li>If you wish to build with zlib support, you will have to grab a compatible
zlib binary from somewhere, with an MSVC import lib, or if you wish to link
statically, you can follow the instructions below to build a compatible
<code class="code">zlib.lib</code> with MSVC. Regardless of which method you use, you must still
follow step 3, or compilation will fail.
<ol class="enumerate">
<li> Grab the <a class="uref" href="http://zlib.net/">zlib sources</a>.
</li><li> Edit <code class="code">win32/Makefile.msc</code> so that it uses -MT instead of -MD, since
this is how FFmpeg is built as well.
</li><li> Edit <code class="code">zconf.h</code> and remove its inclusion of <code class="code">unistd.h</code>. This gets
erroneously included when building FFmpeg.
</li><li> Run <code class="code">nmake -f win32/Makefile.msc</code>.
</li><li> Move <code class="code">zlib.lib</code>, <code class="code">zconf.h</code>, and <code class="code">zlib.h</code> to somewhere MSVC
can see.
</li></ol>
</li><li>FFmpeg has been tested with the following on i686 and x86_64:
<ul class="itemize mark-bullet">
<li>Visual Studio 2013 Pro and Express
</li><li>Intel Composer XE 2013
</li><li>Intel Composer XE 2013 SP1
</li></ul>
<p>Anything else is not officially supported.
</p>
</li></ul>
<ul class="mini-toc">
<li><a href="#Linking-to-FFmpeg-with-Microsoft-Visual-C_002b_002b" accesskey="1">Linking to FFmpeg with Microsoft Visual C++</a></li>
</ul>
<div class="subsection-level-extent" id="Linking-to-FFmpeg-with-Microsoft-Visual-C_002b_002b">
<h4 class="subsection">4.2.1 Linking to FFmpeg with Microsoft Visual C++</h4>
<p>If you plan to link with MSVC-built static libraries, you will need
to make sure you have <code class="code">Runtime Library</code> set to
<code class="code">Multi-threaded (/MT)</code> in your project&rsquo;s settings.
</p>
<p>You will need to define <code class="code">inline</code> to something MSVC understands:
</p><div class="example">
<pre class="example-preformatted">#define inline __inline
</pre></div>
<p>Also note, that as stated in <strong class="strong">Microsoft Visual C++</strong>, you will need
an MSVC-compatible <a class="uref" href="http://code.google.com/p/msinttypes/">inttypes.h</a>.
</p>
<p>If you plan on using import libraries created by dlltool, you must
set <code class="code">References</code> to <code class="code">No (/OPT:NOREF)</code> under the linker optimization
settings, otherwise the resulting binaries will fail during runtime.
This is not required when using import libraries generated by <code class="code">lib.exe</code>.
This issue is reported upstream at
<a class="url" href="http://sourceware.org/bugzilla/show_bug.cgi?id=12633">http://sourceware.org/bugzilla/show_bug.cgi?id=12633</a>.
</p>
<p>To create import libraries that work with the <code class="code">/OPT:REF</code> option
(which is enabled by default in Release mode), follow these steps:
</p>
<ol class="enumerate">
<li> Open the <em class="emph">Visual Studio Command Prompt</em>.
<p>Alternatively, in a normal command line prompt, call <samp class="file">vcvars32.bat</samp>
which sets up the environment variables for the Visual C++ tools
(the standard location for this file is something like
<samp class="file">C:\Program Files (x86_\Microsoft Visual Studio 10.0\VC\bin\vcvars32.bat</samp>).
</p>
</li><li> Enter the <samp class="file">bin</samp> directory where the created LIB and DLL files
are stored.
</li><li> Generate new import libraries with <code class="command">lib.exe</code>:
<div class="example">
<pre class="example-preformatted">lib /machine:i386 /def:..\lib\foo-version.def /out:foo.lib
</pre></div>
<p>Replace <code class="code">foo-version</code> and <code class="code">foo</code> with the respective library names.
</p>
</li></ol>
<a class="anchor" id="Cross-compilation-for-Windows-with-Linux"></a></div>
</div>
<div class="section-level-extent" id="Cross-compilation-for-Windows-with-Linux-1">
<h3 class="section">4.3 Cross compilation for Windows with Linux</h3>
<p>You must use the MinGW cross compilation tools available at
<a class="url" href="http://www.mingw.org/">http://www.mingw.org/</a>.
</p>
<p>Then configure FFmpeg with the following options:
</p><div class="example">
<pre class="example-preformatted">./configure --target-os=mingw32 --cross-prefix=i386-mingw32msvc-
</pre></div>
<p>(you can change the cross-prefix according to the prefix chosen for the
MinGW tools).
</p>
<p>Then you can easily test FFmpeg with <a class="uref" href="http://www.winehq.com/">Wine</a>.
</p>
</div>
<div class="section-level-extent" id="Compilation-under-Cygwin">
<h3 class="section">4.4 Compilation under Cygwin</h3>
<p>Please use Cygwin 1.7.x as the obsolete 1.5.x Cygwin versions lack
llrint() in its C library.
</p>
<p>Install your Cygwin with all the &quot;Base&quot; packages, plus the
following &quot;Devel&quot; ones:
</p><div class="example">
<pre class="example-preformatted">binutils, gcc4-core, make, git, mingw-runtime, texinfo
</pre></div>
<p>In order to run FATE you will also need the following &quot;Utils&quot; packages:
</p><div class="example">
<pre class="example-preformatted">diffutils
</pre></div>
<p>If you want to build FFmpeg with additional libraries, download Cygwin
&quot;Devel&quot; packages for Ogg and Vorbis from any Cygwin packages repository:
</p><div class="example">
<pre class="example-preformatted">libogg-devel, libvorbis-devel
</pre></div>
<p>These library packages are only available from
<a class="uref" href="http://sourceware.org/cygwinports/">Cygwin Ports</a>:
</p>
<div class="example">
<pre class="example-preformatted">yasm, libSDL-devel, libgsm-devel, libmp3lame-devel,
speex-devel, libtheora-devel, libxvidcore-devel
</pre></div>
<p>The recommendation for x264 is to build it from source, as it evolves too
quickly for Cygwin Ports to be up to date.
</p>
</div>
<div class="section-level-extent" id="Crosscompilation-for-Windows-under-Cygwin">
<h3 class="section">4.5 Crosscompilation for Windows under Cygwin</h3>
<p>With Cygwin you can create Windows binaries that do not need the cygwin1.dll.
</p>
<p>Just install your Cygwin as explained before, plus these additional
&quot;Devel&quot; packages:
</p><div class="example">
<pre class="example-preformatted">gcc-mingw-core, mingw-runtime, mingw-zlib
</pre></div>
<p>and add some special flags to your configure invocation.
</p>
<p>For a static build run
</p><div class="example">
<pre class="example-preformatted">./configure --target-os=mingw32 --extra-cflags=-mno-cygwin --extra-libs=-mno-cygwin
</pre></div>
<p>and for a build with shared libraries
</p><div class="example">
<pre class="example-preformatted">./configure --target-os=mingw32 --enable-shared --disable-static --extra-cflags=-mno-cygwin --extra-libs=-mno-cygwin
</pre></div>
</div>
</div>
</div>
</body>
</html>

23
datafiles/ffmpeg/doc/style.min.css vendored Normal file
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File diff suppressed because one or more lines are too long

19
datafiles/ffmpeg/presets/libvpx-1080p.ffpreset Normal file
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@ -0,0 +1,19 @@
vcodec=libvpx
g=120
lag-in-frames=16
deadline=good
cpu-used=0
vprofile=1
qmax=51
qmin=11
slices=4
b=2M
#ignored unless using -pass 2
maxrate=24M
minrate=100k
auto-alt-ref=1
arnr-maxframes=7
arnr-strength=5
arnr-type=centered

19
datafiles/ffmpeg/presets/libvpx-1080p50_60.ffpreset Normal file
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@ -0,0 +1,19 @@
vcodec=libvpx
g=120
lag-in-frames=25
deadline=good
cpu-used=0
vprofile=1
qmax=51
qmin=11
slices=4
b=2M
#ignored unless using -pass 2
maxrate=24M
minrate=100k
auto-alt-ref=1
arnr-maxframes=7
arnr-strength=5
arnr-type=centered

18
datafiles/ffmpeg/presets/libvpx-360p.ffpreset Normal file
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@ -0,0 +1,18 @@
vcodec=libvpx
g=120
lag-in-frames=16
deadline=good
cpu-used=0
vprofile=0
qmax=63
qmin=0
b=768k
#ignored unless using -pass 2
maxrate=1.5M
minrate=40k
auto-alt-ref=1
arnr-maxframes=7
arnr-strength=5
arnr-type=centered

19
datafiles/ffmpeg/presets/libvpx-720p.ffpreset Normal file
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@ -0,0 +1,19 @@
vcodec=libvpx
g=120
lag-in-frames=16
deadline=good
cpu-used=0
vprofile=0
qmax=51
qmin=11
slices=4
b=2M
#ignored unless using -pass 2
maxrate=24M
minrate=100k
auto-alt-ref=1
arnr-maxframes=7
arnr-strength=5
arnr-type=centered

19
datafiles/ffmpeg/presets/libvpx-720p50_60.ffpreset Normal file
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@ -0,0 +1,19 @@
vcodec=libvpx
g=120
lag-in-frames=25
deadline=good
cpu-used=0
vprofile=0
qmax=51
qmin=11
slices=4
b=2M
#ignored unless using -pass 2
maxrate=24M
minrate=100k
auto-alt-ref=1
arnr-maxframes=7
arnr-strength=5
arnr-type=centered

244
objects/o_dialog_preference/Create_0.gml
View file

@ -27,7 +27,7 @@ event_inherited();
#region pages #region pages
page_current = 0; page_current = 0;
page[0] = __txtx("pref_pages_general", "General"); page[0] = __txtx("pref_pages_general", "General");
page[1] = __txtx("pref_pages_appearance", "Appearances"); page[1] = __txtx("pref_pages_interface", "Interface");
page[2] = __txt("Theme"); page[2] = __txt("Theme");
page[3] = __txt("Hotkeys"); page[3] = __txt("Hotkeys");
@ -49,8 +49,10 @@ event_inherited();
draw_sprite_stretched(THEME.ui_panel_bg, 0, 0, yl, ww, hg); draw_sprite_stretched(THEME.ui_panel_bg, 0, 0, yl, ww, hg);
} else if(sHOVER && point_in_rectangle(_m[0], _m[1], 0, yl, ww, yl + hg)) { } else if(sHOVER && point_in_rectangle(_m[0], _m[1], 0, yl, ww, yl + hg)) {
draw_sprite_stretched_ext(THEME.ui_panel_bg, 0, 0, yl, ww, hg, c_white, 0.75); draw_sprite_stretched_ext(THEME.ui_panel_bg, 0, 0, yl, ww, hg, c_white, 0.75);
if(mouse_click(mb_left, sFOCUS)) if(mouse_click(mb_left, sFOCUS)) {
page_current = i; page_current = i;
sp_pref.setScroll(0);
}
} }
draw_text_add(ui(8), yl + hg / 2, page[i]); draw_text_add(ui(8), yl + hg / 2, page[i]);
@ -96,6 +98,8 @@ event_inherited();
#region general #region general
pref_global = ds_list_create(); pref_global = ds_list_create();
ds_list_add(pref_global, __txt("Paths"));
ds_list_add(pref_global, [ ds_list_add(pref_global, [
__txtx("pref_directory", "Directory path (restart required)"), __txtx("pref_directory", "Directory path (restart required)"),
function() { return PRESIST_PREF.path; }, function() { return PRESIST_PREF.path; },
@ -111,43 +115,7 @@ event_inherited();
.setEmpty() .setEmpty()
]); ]);
ds_list_add(pref_global, [ ds_list_add(pref_global, __txt("Inputs"));
__txtx("pref_show_welcome_screen", "Show welcome screen"),
"show_splash",
new checkBox(function() {
PREFERENCES.show_splash = !PREFERENCES.show_splash;
PREF_SAVE();
})
]);
PREFERENCES._display_scaling = PREFERENCES.display_scaling;
ds_list_add(pref_global, [
__txtx("pref_gui_scaling", "GUI scaling"),
"_display_scaling",
new slider(0.5, 2, 0.01, function(val) {
PREFERENCES._display_scaling = val;
PREF_SAVE();
}, function() {
PREFERENCES._display_scaling = clamp(PREFERENCES._display_scaling, 0.5, 2);
if(PREFERENCES.display_scaling == PREFERENCES._display_scaling)
return;
PREFERENCES.display_scaling = PREFERENCES._display_scaling;
resetPanel();
loadFonts();
time_source_start(time_source_create(time_source_global, 1, time_source_units_frames, onResize));
})
]);
ds_list_add(pref_global, [
__txtx("pref_auto_save_time", "Autosave delay (-1 to disable)"),
"auto_save_time",
new textBox(TEXTBOX_INPUT.number, function(val) {
PREFERENCES.auto_save_time = val;
PREF_SAVE();
})
]);
ds_list_add(pref_global, [ ds_list_add(pref_global, [
__txtx("pref_double_click_delay", "Double click delay"), __txtx("pref_double_click_delay", "Double click delay"),
@ -185,44 +153,6 @@ event_inherited();
}) })
]); ]);
ds_list_add(pref_global, [
__txtx("pref_ui_frame_rate", "UI frame rate"),
"ui_framerate",
new textBox(TEXTBOX_INPUT.number, function(str) {
PREFERENCES.ui_framerate = max(15, round(real(str)));
game_set_speed(PREFERENCES.ui_framerate, gamespeed_fps);
PREF_SAVE();
})
]);
ds_list_add(pref_global, [
__txtx("pref_default_surface_size", "Default surface size"),
"default_surface_side",
new textBox(TEXTBOX_INPUT.number, function(str) {
PREFERENCES.default_surface_side = max(1, round(real(str)));
PREF_SAVE();
})
]);
ds_list_add(pref_global, [
__txtx("pref_collection_preview_speed", "Collection preview speed"),
"collection_preview_speed",
new textBox(TEXTBOX_INPUT.number, function(str) {
PREFERENCES.collection_preview_speed = max(1, round(real(str)));
PREF_SAVE();
})
]);
ds_list_add(pref_global, [
__txtx("pref_inspector_line_break_width", "Inspector line break width"),
"inspector_line_break_width",
new textBox(TEXTBOX_INPUT.number, function(str) {
PREFERENCES.inspector_line_break_width = max(1, round(real(str)));
PREF_SAVE();
})
]);
ds_list_add(pref_global, [ ds_list_add(pref_global, [
__txtx("pref_expand_hovering_panel", "Expand hovering panel"), __txtx("pref_expand_hovering_panel", "Expand hovering panel"),
"expand_hover", "expand_hover",
@ -232,23 +162,7 @@ event_inherited();
}) })
]); ]);
ds_list_add(pref_global, [ ds_list_add(pref_global, __txt("Save/Load"));
__txtx("pref_graph_zoom_smoothing", "Graph zoom smoothing"),
"graph_zoom_smoooth",
new textBox(TEXTBOX_INPUT.number, function(str) {
PREFERENCES.graph_zoom_smoooth = max(1, round(real(str)));
PREF_SAVE();
})
]);
ds_list_add(pref_global, [
__txtx("pref_warning_notification_time", "Warning notification time"),
"notification_time",
new textBox(TEXTBOX_INPUT.number, function(str) {
PREFERENCES.notification_time = max(0, round(real(str)));
PREF_SAVE();
})
]);
ds_list_add(pref_global, [ ds_list_add(pref_global, [
__txtx("pref_save_file_minify", "Minify save file"), __txtx("pref_save_file_minify", "Minify save file"),
@ -259,14 +173,7 @@ event_inherited();
}) })
]); ]);
ds_list_add(pref_global, [ ds_list_add(pref_global, __txt("Crash"));
__txtx("pref_enable_test_mode", "Enable developer mode (require restart)"),
"test_mode",
new checkBox(function() {
PREFERENCES.test_mode = !PREFERENCES.test_mode;
PREF_SAVE();
})
]);
ds_list_add(pref_global, [ ds_list_add(pref_global, [
__txtx("pref_legacy_exception", "Use legacy exception handler"), __txtx("pref_legacy_exception", "Use legacy exception handler"),
@ -288,20 +195,62 @@ event_inherited();
}) })
]); ]);
ds_list_add(pref_global, __txt("Misc"));
ds_list_add(pref_global, [ ds_list_add(pref_global, [
__txtx("pref_clear_temp", "Clear temp file on close."), __txtx("pref_clear_temp", "Clear temp file on close"),
"clear_temp_on_close", "clear_temp_on_close",
new checkBox(function() { new checkBox(function() {
PREFERENCES.clear_temp_on_close = !PREFERENCES.clear_temp_on_close; PREFERENCES.clear_temp_on_close = !PREFERENCES.clear_temp_on_close;
PREF_SAVE(); PREF_SAVE();
}) })
]); ]);
ds_list_add(pref_global, [
__txtx("pref_enable_test_mode", "Enable developer mode (require restart)"),
"test_mode",
new checkBox(function() {
PREFERENCES.test_mode = !PREFERENCES.test_mode;
PREF_SAVE();
})
]);
#endregion #endregion
#region appearance #region interface
pref_appr = ds_list_create(); pref_appr = ds_list_create();
ds_list_add(pref_appr, __txt("Interface")); ds_list_add(pref_appr, __txt("Interface"));
PREFERENCES._display_scaling = PREFERENCES.display_scaling;
ds_list_add(pref_appr, [
__txtx("pref_gui_scaling", "GUI scaling"),
"_display_scaling",
new slider(0.5, 2, 0.01, function(val) {
PREFERENCES._display_scaling = val;
PREF_SAVE();
}, function() {
PREFERENCES._display_scaling = clamp(PREFERENCES._display_scaling, 0.5, 2);
if(PREFERENCES.display_scaling == PREFERENCES._display_scaling)
return;
PREFERENCES.display_scaling = PREFERENCES._display_scaling;
resetPanel();
loadFonts();
time_source_start(time_source_create(time_source_global, 1, time_source_units_frames, onResize));
})
]);
ds_list_add(pref_appr, [
__txtx("pref_ui_frame_rate", "UI frame rate"),
"ui_framerate",
new textBox(TEXTBOX_INPUT.number, function(str) {
PREFERENCES.ui_framerate = max(15, round(real(str)));
game_set_speed(PREFERENCES.ui_framerate, gamespeed_fps);
PREF_SAVE();
})
]);
locals = []; locals = [];
var f = file_find_first(DIRECTORY + "Locale/*", fa_directory); var f = file_find_first(DIRECTORY + "Locale/*", fa_directory);
while(f != "") { while(f != "") {
@ -321,6 +270,17 @@ event_inherited();
}, false) }, false)
]); ]);
ds_list_add(pref_appr, __txt("Splash"));
ds_list_add(pref_appr, [
__txtx("pref_auto_save_time", "Autosave delay (-1 to disable)"),
"auto_save_time",
new textBox(TEXTBOX_INPUT.number, function(val) {
PREFERENCES.auto_save_time = val;
PREF_SAVE();
})
]);
ds_list_add(pref_appr, __txt("Graph")); ds_list_add(pref_appr, __txt("Graph"));
ds_list_add(pref_appr, [ ds_list_add(pref_appr, [
@ -377,6 +337,58 @@ event_inherited();
PREF_SAVE(); PREF_SAVE();
}) })
]); ]);
ds_list_add(pref_appr, [
__txtx("pref_graph_zoom_smoothing", "Graph zoom smoothing"),
"graph_zoom_smoooth",
new textBox(TEXTBOX_INPUT.number, function(str) {
PREFERENCES.graph_zoom_smoooth = max(1, round(real(str)));
PREF_SAVE();
})
]);
ds_list_add(pref_appr, __txt("Inspector"));
ds_list_add(pref_appr, [
__txtx("pref_inspector_line_break_width", "Inspector line break width"),
"inspector_line_break_width",
new textBox(TEXTBOX_INPUT.number, function(str) {
PREFERENCES.inspector_line_break_width = max(1, round(real(str)));
PREF_SAVE();
})
]);
ds_list_add(pref_appr, [
__txtx("pref_inspector_focus_on_double_click", "Focus on double click"),
"PREFERENCES.inspector_focus_on_double_click",
new checkBox(function(str) {
PREFERENCES.inspector_focus_on_double_click = !PREFERENCES.inspector_focus_on_double_click;
PREF_SAVE();
})
]);
ds_list_add(pref_appr, __txt("Collection"));
ds_list_add(pref_appr, [
__txtx("pref_collection_preview_speed", "Collection preview speed"),
"collection_preview_speed",
new textBox(TEXTBOX_INPUT.number, function(str) {
PREFERENCES.collection_preview_speed = max(1, round(real(str)));
PREF_SAVE();
})
]);
ds_list_add(pref_appr, __txt("Notification"));
ds_list_add(pref_appr, [
__txtx("pref_warning_notification_time", "Warning notification time"),
"notification_time",
new textBox(TEXTBOX_INPUT.number, function(str) {
PREFERENCES.notification_time = max(0, round(real(str)));
PREF_SAVE();
})
]);
#endregion #endregion
#region theme #region theme
@ -682,7 +694,7 @@ event_inherited();
if(hk_editing == key) cc = COLORS._main_text_accent; if(hk_editing == key) cc = COLORS._main_text_accent;
draw_set_text(f_p0, fa_right, fa_top, cc); draw_set_text(f_p0, fa_right, fa_top, cc);
draw_text(key_x1 - ui(24), yy + hh, dk); draw_text_add(key_x1 - ui(24), yy + hh, dk);
if(key.key != dkey || key.modi != dmod) { if(key.key != dkey || key.modi != dmod) {
modified = true; modified = true;
@ -761,7 +773,7 @@ event_inherited();
if(hk_editing == key) cc = COLORS._main_text_accent; if(hk_editing == key) cc = COLORS._main_text_accent;
draw_set_text(f_p0, fa_right, fa_top, cc); draw_set_text(f_p0, fa_right, fa_top, cc);
draw_text(key_x1 - ui(24), yy + hh, pkey); draw_text_add(key_x1 - ui(24), yy + hh, pkey);
if(key.key != key.dkey) { if(key.key != key.dkey) {
modified = true; modified = true;
@ -824,13 +836,22 @@ event_inherited();
_pref[2].register(sp_pref); _pref[2].register(sp_pref);
} }
var sect = [];
var psect = "";
for(var i = 0; i < ds_list_size(current_list); i++) { for(var i = 0; i < ds_list_size(current_list); i++) {
var _pref = current_list[| i]; var _pref = current_list[| i];
var th = TEXTBOX_HEIGHT; var th = TEXTBOX_HEIGHT;
if(is_string(_pref)) { if(is_string(_pref)) {
draw_set_text(f_p0b, fa_left, fa_top, COLORS._main_text_sub); draw_set_text(f_p0b, fa_left, fa_top, COLORS._main_text_sub);
draw_text(ui(16), yy, _pref); draw_text_add(ui(8), yy, _pref);
array_push(sect, [ _pref, sp_pref, hh + ui(12) ]);
if(yy >= 0 && section_current == "")
section_current = psect;
psect = _pref;
yy += string_height(_pref) + ui(8); yy += string_height(_pref) + ui(8);
hh += string_height(_pref) + ui(8); hh += string_height(_pref) + ui(8);
ind = 0; ind = 0;
@ -844,11 +865,10 @@ event_inherited();
if(search_text != "" && string_pos(string_lower(search_text), string_lower(name)) == 0) if(search_text != "" && string_pos(string_lower(search_text), string_lower(name)) == 0)
continue; continue;
if(ind % 2 == 0) if(ind % 2 == 0) draw_sprite_stretched_ext(THEME.ui_panel_bg, 0, 0, yy - padd, sp_pref.surface_w, th + padd * 2, COLORS.dialog_preference_prop_bg, 1);
draw_sprite_stretched_ext(THEME.ui_panel_bg, 0, 0, yy - padd, sp_pref.surface_w, th + padd * 2, COLORS.dialog_preference_prop_bg, 1);
draw_set_text(f_p1, fa_left, fa_center, COLORS._main_text); draw_set_text(f_p1, fa_left, fa_center, COLORS._main_text);
draw_text(ui(8), yy + th / 2, _pref[0]); draw_text_add(ui(24), yy + th / 2, _pref[0]);
_pref[2].setFocusHover(sFOCUS, sHOVER && sp_pref.hover); _pref[2].setFocusHover(sFOCUS, sHOVER && sp_pref.hover);
var widget_w = ui(240); var widget_w = ui(240);
@ -861,6 +881,8 @@ event_inherited();
var widget_y = yy; var widget_y = yy;
var params = new widgetParam(widget_x, widget_y, widget_w, widget_h, txt, {}, _m, _r[0], _r[1]); var params = new widgetParam(widget_x, widget_y, widget_w, widget_h, txt, {}, _m, _r[0], _r[1]);
params.s = ui(30);
if(instanceof(_pref[2]) == "checkBox") if(instanceof(_pref[2]) == "checkBox")
params.halign = fa_center; params.halign = fa_center;
@ -871,6 +893,8 @@ event_inherited();
ind++; ind++;
} }
sections[page_current] = sect;
return hh; return hh;
}); });
#endregion #endregion

181
scripts/addon_lua/addon_lua.gml → scripts/addon_lua_function/addon_lua_function.gml
View file

@ -1,15 +1,3 @@
// feather ignore all
#region setup
function __addon_lua_setup(lua, context) {
__addon_lua_setup_functions(lua);
__addon_lua_setup_constants(lua, context);
__addon_lua_setup_widget(lua, context);
context.ready = true;
}
#endregion
#region API #region API
function __addon_lua_setup_functions(lua) { function __addon_lua_setup_functions(lua) {
for( var i = 0, n = array_length(global.__lua_functions); i < n; i++ ) { for( var i = 0, n = array_length(global.__lua_functions); i < n; i++ ) {
@ -883,172 +871,3 @@
", ",
]; ];
#endregion #endregion
#region widget manager
global.__lua_widget_functions = [
[ "__widget_wake", function(wd, hover, focus) {
if(!ds_map_exists(global.ADDON_WIDGET, wd)) return;
global.ADDON_WIDGET[? wd].setFocusHover(focus, hover);
} ],
[ "__textBox", function(ID, type, onModify) {
var _addon = noone;
with(_addon_custom) if(self.ID == ID) _addon = self;
if(_addon == noone) return noone;
var wd = new textBox(type, noone);
wd.setLua(_addon.thread, onModify, function(txt) {
return lua_call(lua_thread, lua_thread_key, txt);
});
var key = UUID_generate();
global.ADDON_WIDGET[? key] = wd;
return key;
} ],
[ "__textBox_draw", function(wd, _x, _y, _w, _h, _text, _m) {
if(!ds_map_exists(global.ADDON_WIDGET, wd)) return;
global.ADDON_WIDGET[? wd].draw(_x, _y, _w, _h, _text, _m);
} ],
@"
TextBox = {}
TextBox.new = function(type, onModify)
local self = {}
self.id = __textBox(ID, type, onModify)
function self.draw(self, _x, _y, _w, _h, _text)
__widget_wake(self.id, Panel.hoverable, Panel.clickable)
__textBox_draw(self.id, _x, _y, _w, _h, _text, Panel.mouse)
end
return self
end",
[ "__vectorBox", function(ID, size, onModify) {
var _addon = noone;
with(_addon_custom) if(self.ID == ID) _addon = self;
if(_addon == noone) return noone;
var wd = new vectorBox(size, noone);
wd.setLua(_addon.thread, onModify, function(i, v) {
return lua_call(lua_thread, lua_thread_key, i + 1, v);
});
var key = UUID_generate();
global.ADDON_WIDGET[? key] = wd;
return key;
} ],
[ "__vectorBox_draw", function(wd, _x, _y, _w, _h, _vector, _m) {
if(!ds_map_exists(global.ADDON_WIDGET, wd)) return;
global.ADDON_WIDGET[? wd].draw(_x, _y, _w, _h, _vector, _m);
} ],
@"
VectorBox = {}
VectorBox.new = function(size, onModify)
local self = {}
self.id = __vectorBox(ID, size, onModify)
function self.draw(self, _x, _y, _w, _h, _vector)
__widget_wake(self.id, Panel.hoverable, Panel.clickable)
__vectorBox_draw(self.id, _x, _y, _w, _h, _vector, Panel.mouse)
end
return self
end",
[ "__checkBox", function(ID, onModify) {
var _addon = noone;
with(_addon_custom) if(self.ID == ID) _addon = self;
if(_addon == noone) return noone;
var wd = new checkBox(onModify);
wd.setLua(_addon.thread, onModify, function() {
return lua_call(lua_thread, lua_thread_key);
});
var key = UUID_generate();
global.ADDON_WIDGET[? key] = wd;
return key;
} ],
[ "__checkBox_draw", function(wd, _x, _y, _value, _m) {
if(!ds_map_exists(global.ADDON_WIDGET, wd)) return;
global.ADDON_WIDGET[? wd].draw(_x, _y, _value);
} ],
@"
CheckBox = {}
CheckBox.new = function(onModify)
local self = {}
self.id = __checkBox(ID, onModify)
function self.draw(self, _x, _y, _value)
__widget_wake(self.id, Panel.hoverable, Panel.clickable)
__checkBox_draw(self.id, _x, _y, _value, Panel.mouse)
end
return self
end",
[ "__button", function(ID, onModify, txt = "") {
var _addon = noone;
with(_addon_custom) if(self.ID == ID) _addon = self;
if(_addon == noone) return noone;
var wd = button(onModify).setText(txt);
wd.setLua(_addon.thread, onModify, function() {
return lua_call(lua_thread, lua_thread_key);
});
var key = UUID_generate();
global.ADDON_WIDGET[? key] = wd;
return key;
} ],
[ "__button_draw", function(wd, _x, _y, _w, _h, _m) {
if(!ds_map_exists(global.ADDON_WIDGET, wd)) return;
var _button = global.ADDON_WIDGET[? wd];
_button.draw(_x, _y, _w, _h);
} ],
@"
Button = {}
Button.new = function(onModify, txt)
local self = {}
self.id = __button(ID, onModify, txt)
function self.draw(self, _x, _y, _w, _h)
__widget_wake(self.id, Panel.hoverable, Panel.clickable)
__button_draw(self.id, _x, _y, _w, _h, Panel.mouse)
end
return self
end",
];
function __addon_lua_setup_widget(lua, context) {
for( var i = 0, n = array_length(global.__lua_widget_functions); i < n; i++ ) {
var _func = global.__lua_widget_functions[i];
if(is_string(_func))
lua_add_code(lua, _func);
else if(is_array(_func))
lua_add_function(lua, _func[0], _func[1]);
}
}
#endregion

11
scripts/addon_lua_function/addon_lua_function.yy Normal file
View file

@ -0,0 +1,11 @@
{
"resourceType": "GMScript",
"resourceVersion": "1.0",
"name": "addon_lua_function",
"isCompatibility": false,
"isDnD": false,
"parent": {
"name": "custom",
"path": "folders/addons/custom.yy",
},
}

179
scripts/addon_lua_widget/addon_lua_widget.gml Normal file
View file

@ -0,0 +1,179 @@
// feather ignore all
#region setup
function __addon_lua_setup(lua, context) {
__addon_lua_setup_functions(lua);
__addon_lua_setup_constants(lua, context);
__addon_lua_setup_widget(lua, context);
context.ready = true;
}
#endregion
#region widget manager
global.__lua_widget_functions = [
[ "__widget_wake", function(wd, hover, focus) {
if(!ds_map_exists(global.ADDON_WIDGET, wd)) return;
global.ADDON_WIDGET[? wd].setFocusHover(focus, hover);
} ],
[ "__textBox", function(ID, type, onModify) {
var _addon = noone;
with(_addon_custom) if(self.ID == ID) _addon = self;
if(_addon == noone) return noone;
var wd = new textBox(type, noone);
wd.setLua(_addon.thread, onModify, function(txt) {
return lua_call(lua_thread, lua_thread_key, txt);
});
var key = UUID_generate();
global.ADDON_WIDGET[? key] = wd;
return key;
} ],
[ "__textBox_draw", function(wd, _x, _y, _w, _h, _text, _m) {
if(!ds_map_exists(global.ADDON_WIDGET, wd)) return;
global.ADDON_WIDGET[? wd].draw(_x, _y, _w, _h, _text, _m);
} ],
@"
TextBox = {}
TextBox.new = function(type, onModify)
local self = {}
self.id = __textBox(ID, type, onModify)
function self.draw(self, _x, _y, _w, _h, _text)
__widget_wake(self.id, Panel.hoverable, Panel.clickable)
__textBox_draw(self.id, _x, _y, _w, _h, _text, Panel.mouse)
end
return self
end",
[ "__vectorBox", function(ID, size, onModify) {
var _addon = noone;
with(_addon_custom) if(self.ID == ID) _addon = self;
if(_addon == noone) return noone;
var wd = new vectorBox(size, noone);
wd.setLua(_addon.thread, onModify, function(i, v) {
return lua_call(lua_thread, lua_thread_key, i + 1, v);
});
var key = UUID_generate();
global.ADDON_WIDGET[? key] = wd;
return key;
} ],
[ "__vectorBox_draw", function(wd, _x, _y, _w, _h, _vector, _m) {
if(!ds_map_exists(global.ADDON_WIDGET, wd)) return;
global.ADDON_WIDGET[? wd].draw(_x, _y, _w, _h, _vector, _m);
} ],
@"
VectorBox = {}
VectorBox.new = function(size, onModify)
local self = {}
self.id = __vectorBox(ID, size, onModify)
function self.draw(self, _x, _y, _w, _h, _vector)
__widget_wake(self.id, Panel.hoverable, Panel.clickable)
__vectorBox_draw(self.id, _x, _y, _w, _h, _vector, Panel.mouse)
end
return self
end",
[ "__checkBox", function(ID, onModify) {
var _addon = noone;
with(_addon_custom) if(self.ID == ID) _addon = self;
if(_addon == noone) return noone;
var wd = new checkBox(onModify);
wd.setLua(_addon.thread, onModify, function() {
return lua_call(lua_thread, lua_thread_key);
});
var key = UUID_generate();
global.ADDON_WIDGET[? key] = wd;
return key;
} ],
[ "__checkBox_draw", function(wd, _x, _y, _value, _m) {
if(!ds_map_exists(global.ADDON_WIDGET, wd)) return;
global.ADDON_WIDGET[? wd].draw(_x, _y, _value);
} ],
@"
CheckBox = {}
CheckBox.new = function(onModify)
local self = {}
self.id = __checkBox(ID, onModify)
function self.draw(self, _x, _y, _value)
__widget_wake(self.id, Panel.hoverable, Panel.clickable)
__checkBox_draw(self.id, _x, _y, _value, Panel.mouse)
end
return self
end",
[ "__button", function(ID, onModify, txt = "") {
var _addon = noone;
with(_addon_custom) if(self.ID == ID) _addon = self;
if(_addon == noone) return noone;
var wd = button(onModify).setText(txt);
wd.setLua(_addon.thread, onModify, function() {
return lua_call(lua_thread, lua_thread_key);
});
var key = UUID_generate();
global.ADDON_WIDGET[? key] = wd;
return key;
} ],
[ "__button_draw", function(wd, _x, _y, _w, _h, _m) {
if(!ds_map_exists(global.ADDON_WIDGET, wd)) return;
var _button = global.ADDON_WIDGET[? wd];
_button.draw(_x, _y, _w, _h);
} ],
@"
Button = {}
Button.new = function(onModify, txt)
local self = {}
self.id = __button(ID, onModify, txt)
function self.draw(self, _x, _y, _w, _h)
__widget_wake(self.id, Panel.hoverable, Panel.clickable)
__button_draw(self.id, _x, _y, _w, _h, Panel.mouse)
end
return self
end",
];
function __addon_lua_setup_widget(lua, context) {
for( var i = 0, n = array_length(global.__lua_widget_functions); i < n; i++ ) {
var _func = global.__lua_widget_functions[i];
if(is_string(_func))
lua_add_code(lua, _func);
else if(is_array(_func))
lua_add_function(lua, _func[0], _func[1]);
}
}
#endregion

2
scripts/addon_lua/addon_lua.yy → scripts/addon_lua_widget/addon_lua_widget.yy
View file

@ -1,7 +1,7 @@
{ {
"resourceType": "GMScript", "resourceType": "GMScript",
"resourceVersion": "1.0", "resourceVersion": "1.0",
"name": "addon_lua", "name": "addon_lua_widget",
"isCompatibility": false, "isCompatibility": false,
"isDnD": false, "isDnD": false,
"parent": { "parent": {

1
scripts/animation_controller/animation_controller.gml
View file

@ -7,6 +7,7 @@
} }
#macro ANIMATION_STATIC !(PROJECT.animator.is_playing || PROJECT.animator.frame_progress) #macro ANIMATION_STATIC !(PROJECT.animator.is_playing || PROJECT.animator.frame_progress)
#macro IS_PLAYING PROJECT.animator.is_playing
#macro CURRENT_FRAME PROJECT.animator.current_frame #macro CURRENT_FRAME PROJECT.animator.current_frame
#macro TOTAL_FRAMES PROJECT.animator.frames_total #macro TOTAL_FRAMES PROJECT.animator.frames_total
#endregion #endregion

8
scripts/buffer_functions/buffer_functions.gml
View file

@ -27,21 +27,21 @@ function buffer_from_string(str) {
return _b; return _b;
} }
function buffer_from_surface(surface, size = true) { function buffer_from_surface(surface, header = true) {
static header_length = 24; static header_length = 24;
if(!is_surface(surface)) return noone; if(!is_surface(surface)) return noone;
var bitSize = surface_format_get_bytes(surface_get_format(surface)); var bitSize = surface_format_get_bytes(surface_get_format(surface));
var _b = buffer_create((header_length * size) + surface_get_width_safe(surface) * surface_get_height_safe(surface) * bitSize, buffer_fixed, 1); var _b = buffer_create((header_length * header) + surface_get_width_safe(surface) * surface_get_height_safe(surface) * bitSize, buffer_fixed, 1);
if(size) { if(header) {
buffer_write(_b, buffer_text, "PXCS"); buffer_write(_b, buffer_text, "PXCS");
buffer_write(_b, buffer_u16, surface_get_width_safe(surface)); buffer_write(_b, buffer_u16, surface_get_width_safe(surface));
buffer_write(_b, buffer_u16, surface_get_height_safe(surface)); buffer_write(_b, buffer_u16, surface_get_height_safe(surface));
buffer_write(_b, buffer_u8, surface_get_format(surface)); buffer_write(_b, buffer_u8, surface_get_format(surface));
} }
buffer_get_surface(_b, surface, header_length * size); buffer_get_surface(_b, surface, header_length * header);
return _b; return _b;
} }

9
scripts/draw_surface_blend/draw_surface_blend.gml
View file

@ -1,5 +1,9 @@
globalvar BLEND_TYPES; globalvar BLEND_TYPES;
BLEND_TYPES = [ "Normal", "Add", "Subtract", "Multiply", "Screen", "Overlay", "Hue", "Saturation", "Luminosity", "Maximum", "Minimum", "Replace", "Difference" ]; BLEND_TYPES = [
"Normal", "Add", "Subtract", "Multiply", "Screen",
"Overlay", "Hue", "Saturation", "Luminosity", "Maximum",
"Minimum", "Replace", "Difference"
];
function draw_surface_blend(background, foreground, blend = 0, alpha = 1, _pre_alp = true, _mask = 0, tile = 0) { function draw_surface_blend(background, foreground, blend = 0, alpha = 1, _pre_alp = true, _mask = 0, tile = 0) {
if(!is_surface(background)) return; if(!is_surface(background)) return;
@ -11,12 +15,13 @@ function draw_surface_blend(background, foreground, blend = 0, alpha = 1, _pre_a
case "Subtract" : sh = sh_blend_subtract; break; case "Subtract" : sh = sh_blend_subtract; break;
case "Multiply" : sh = sh_blend_multiply; break; case "Multiply" : sh = sh_blend_multiply; break;
case "Screen" : sh = sh_blend_screen; break; case "Screen" : sh = sh_blend_screen; break;
case "Overlay" : sh = sh_blend_overlay; break; case "Overlay" : sh = sh_blend_overlay; break;
case "Hue" : sh = sh_blend_hue; break; case "Hue" : sh = sh_blend_hue; break;
case "Saturation" : sh = sh_blend_sat; break; case "Saturation" : sh = sh_blend_sat; break;
case "Luminosity" : sh = sh_blend_luma; break; case "Luminosity" : sh = sh_blend_luma; break;
case "Maximum" : sh = sh_blend_max; break; case "Maximum" : sh = sh_blend_max; break;
case "Minimum" : sh = sh_blend_min; break; case "Minimum" : sh = sh_blend_min; break;
case "Replace" : sh = sh_blend_replace; break; case "Replace" : sh = sh_blend_replace; break;
case "Difference" : sh = sh_blend_difference; break; case "Difference" : sh = sh_blend_difference; break;

23
scripts/node_3d_set_material/node_3d_set_material.gml
View file

@ -5,7 +5,14 @@ function Node_3D_Set_Material(_x, _y, _group = noone) : Node_3D_Modifier(_x, _y,
.setVisible(true, true) .setVisible(true, true)
.setArrayDepth(1); .setArrayDepth(1);
static processData = function(_output, _data, _output_index, _array_index = 0) { inputs[| in_mesh + 1] = nodeValue("Single material", self, JUNCTION_CONNECT.input, VALUE_TYPE.boolean, true)
static preGetInputs = function() { #region
var _sing = inputs[| in_mesh + 1].getValue();
inputs[| in_mesh + 0].setArrayDepth(_sing? 0 : 1);
} #endregion
static processData = function(_output, _data, _output_index, _array_index = 0) { #region
var _obj = _data[0]; var _obj = _data[0];
var _mat = _data[in_mesh + 0]; var _mat = _data[in_mesh + 0];
@ -22,5 +29,17 @@ function Node_3D_Set_Material(_x, _y, _group = noone) : Node_3D_Modifier(_x, _y,
_res.materials = _mat; _res.materials = _mat;
return _res; return _res;
} } #endregion
static getPreviewValues = function() { #region
var _sing = getSingleValue(in_mesh + 1);
var res = array_safe_get(all_inputs, in_mesh + 0, noone);
if(_sing) return res;
var _r = array_create(array_length(res));
for( var i = 0, n = array_length(res); i < n; i++ )
_r[i] = array_safe_get(res[i], 0);
return _r;
} #endregion
} }

14
scripts/node_VFX_renderer/node_VFX_renderer.gml
View file

@ -71,7 +71,7 @@ function Node_VFX_Renderer(_x, _y, _group = noone) : Node(_x, _y, _group) constr
} #endregion } #endregion
static update = function(_time = CURRENT_FRAME) { #region static update = function(_time = CURRENT_FRAME) { #region
if(!PROJECT.animator.is_playing) { if(!IS_PLAYING) {
recoverCache(); recoverCache();
return; return;
} }
@ -87,13 +87,11 @@ function Node_VFX_Renderer(_x, _y, _group = noone) : Node(_x, _y, _group) constr
surface_set_shader(_outSurf); surface_set_shader(_outSurf);
shader_set_interpolation(_outSurf); shader_set_interpolation(_outSurf);
switch(_blend) {
if(_blend == PARTICLE_BLEND_MODE.normal) case PARTICLE_BLEND_MODE.normal: BLEND_NORMAL; break;
BLEND_NORMAL; case PARTICLE_BLEND_MODE.alpha: BLEND_ALPHA; break;
else if(_blend == PARTICLE_BLEND_MODE.alpha) case PARTICLE_BLEND_MODE.additive: BLEND_ADD; break;
BLEND_ALPHA; }
else if(_blend == PARTICLE_BLEND_MODE.additive)
BLEND_ADD;
var surf_w = surface_get_width_safe(_outSurf); var surf_w = surface_get_width_safe(_outSurf);
var surf_h = surface_get_height_safe(_outSurf); var surf_h = surface_get_height_safe(_outSurf);

21
scripts/node_VFX_renderer_output/node_VFX_renderer_output.gml
View file

@ -90,6 +90,10 @@ function Node_VFX_Renderer_Output(_x, _y, _group = noone) : Node_Group_Output(_x
static update = function(_time = CURRENT_FRAME) { #region static update = function(_time = CURRENT_FRAME) { #region
if(!is_instanceof(outParent, NodeValue)) return noone; if(!is_instanceof(outParent, NodeValue)) return noone;
if(!IS_PLAYING) {
recoverCache();
return;
}
var _dim = inputs[| 0].getValue(_time); var _dim = inputs[| 0].getValue(_time);
var _exact = inputs[| 1].getValue(_time); var _exact = inputs[| 1].getValue(_time);
@ -102,13 +106,11 @@ function Node_VFX_Renderer_Output(_x, _y, _group = noone) : Node_Group_Output(_x
surface_set_shader(_outSurf); surface_set_shader(_outSurf);
shader_set_interpolation(_outSurf); shader_set_interpolation(_outSurf);
switch(_blend) {
if(_blend == PARTICLE_BLEND_MODE.normal) case PARTICLE_BLEND_MODE.normal: BLEND_NORMAL; break;
BLEND_NORMAL; case PARTICLE_BLEND_MODE.alpha: BLEND_ALPHA; break;
else if(_blend == PARTICLE_BLEND_MODE.alpha) case PARTICLE_BLEND_MODE.additive: BLEND_ADD; break;
BLEND_ALPHA; }
else if(_blend == PARTICLE_BLEND_MODE.additive)
BLEND_ADD;
var surf_w = surface_get_width_safe(_outSurf); var surf_w = surface_get_width_safe(_outSurf);
var surf_h = surface_get_height_safe(_outSurf); var surf_h = surface_get_height_safe(_outSurf);
@ -119,17 +121,12 @@ function Node_VFX_Renderer_Output(_x, _y, _group = noone) : Node_Group_Output(_x
if(!is_array(parts) || array_length(parts) == 0) continue; if(!is_array(parts) || array_length(parts) == 0) continue;
if(!is_array(parts[0])) parts = [ parts ]; if(!is_array(parts[0])) parts = [ parts ];
//var drawnParts = 0;
for(var j = 0; j < array_length(parts); j++) for(var j = 0; j < array_length(parts); j++)
for(var k = 0; k < array_length(parts[j]); k++) { for(var k = 0; k < array_length(parts[j]); k++) {
if(!parts[j][k].active) continue; if(!parts[j][k].active) continue;
//drawnParts++;
parts[j][k].draw(_exact, surf_w, surf_h); parts[j][k].draw(_exact, surf_w, surf_h);
} }
//print($"Renderer input index {i}: {drawnParts} particles drawn.");
} }
BLEND_NORMAL; BLEND_NORMAL;

3
scripts/node_VFX_spawner/node_VFX_spawner.gml
View file

@ -25,8 +25,7 @@ function Node_VFX_Spawner(_x, _y, _group = noone) : Node_VFX_Spawner_Base(_x, _y
UPDATE_PART_FORWARD UPDATE_PART_FORWARD
static onUpdate = function(frame = CURRENT_FRAME) { #region static onUpdate = function(frame = CURRENT_FRAME) { #region
if(PROJECT.animator.frame_progress) if(IS_PLAYING) runVFX(frame);
runVFX(frame);
if(attributes.Output_pool) { if(attributes.Output_pool) {
outputs[| 0].setValue(parts); outputs[| 0].setValue(parts);

45
scripts/node_color_adjustment/node_color_adjustment.gml
View file

@ -1,21 +1,6 @@
function Node_Color_adjust(_x, _y, _group = noone) : Node_Processor(_x, _y, _group) constructor { function Node_Color_adjust(_x, _y, _group = noone) : Node_Processor(_x, _y, _group) constructor {
name = "Color Adjust"; name = "Color Adjust";
shader = sh_color_adjust;
uniform_bri = shader_get_uniform(shader, "brightness");
uniform_exp = shader_get_uniform(shader, "exposure");
uniform_con = shader_get_uniform(shader, "contrast");
uniform_hue = shader_get_uniform(shader, "hue");
uniform_sat = shader_get_uniform(shader, "sat");
uniform_val = shader_get_uniform(shader, "val");
uniform_alp = shader_get_uniform(shader, "alpha");
uniform_bl = shader_get_uniform(shader, "blend");
uniform_bla = shader_get_uniform(shader, "blendAlpha");
uniform_mask_use = shader_get_uniform(shader, "use_mask");
uniform_mask = shader_get_sampler_index(shader, "mask");
inputs[| 0] = nodeValue("Surface in", self, JUNCTION_CONNECT.input, VALUE_TYPE.surface, 0); inputs[| 0] = nodeValue("Surface in", self, JUNCTION_CONNECT.input, VALUE_TYPE.surface, 0);
inputs[| 1] = nodeValue("Brightness", self, JUNCTION_CONNECT.input, VALUE_TYPE.float, 0) inputs[| 1] = nodeValue("Brightness", self, JUNCTION_CONNECT.input, VALUE_TYPE.float, 0)
@ -35,7 +20,7 @@ function Node_Color_adjust(_x, _y, _group = noone) : Node_Processor(_x, _y, _gro
inputs[| 6] = nodeValue("Blend", self, JUNCTION_CONNECT.input, VALUE_TYPE.color, c_white); inputs[| 6] = nodeValue("Blend", self, JUNCTION_CONNECT.input, VALUE_TYPE.color, c_white);
inputs[| 7] = nodeValue("Blend alpha", self, JUNCTION_CONNECT.input, VALUE_TYPE.float, 0) inputs[| 7] = nodeValue("Blend amount", self, JUNCTION_CONNECT.input, VALUE_TYPE.float, 0)
.setDisplay(VALUE_DISPLAY.slider); .setDisplay(VALUE_DISPLAY.slider);
inputs[| 8] = nodeValue("Mask", self, JUNCTION_CONNECT.input, VALUE_TYPE.surface, 0); inputs[| 8] = nodeValue("Mask", self, JUNCTION_CONNECT.input, VALUE_TYPE.surface, 0);
@ -56,6 +41,9 @@ function Node_Color_adjust(_x, _y, _group = noone) : Node_Processor(_x, _y, _gro
.setDisplay(VALUE_DISPLAY.palette) .setDisplay(VALUE_DISPLAY.palette)
.setVisible(true, true); .setVisible(true, true);
inputs[| 14] = nodeValue("Blend mode", self, JUNCTION_CONNECT.input, VALUE_TYPE.integer, 0)
.setDisplay(VALUE_DISPLAY.enum_scroll, BLEND_TYPES);
outputs[| 0] = nodeValue("Surface out", self, JUNCTION_CONNECT.output, VALUE_TYPE.surface, noone); outputs[| 0] = nodeValue("Surface out", self, JUNCTION_CONNECT.output, VALUE_TYPE.surface, noone);
outputs[| 1] = nodeValue("Color out", self, JUNCTION_CONNECT.output, VALUE_TYPE.color, []) outputs[| 1] = nodeValue("Color out", self, JUNCTION_CONNECT.output, VALUE_TYPE.color, [])
@ -64,7 +52,7 @@ function Node_Color_adjust(_x, _y, _group = noone) : Node_Processor(_x, _y, _gro
input_display_list = [11, 12, 0, 8, 13, input_display_list = [11, 12, 0, 8, 13,
["Brightness", false], 1, 10, 2, ["Brightness", false], 1, 10, 2,
["HSV", false], 3, 4, 5, ["HSV", false], 3, 4, 5,
["Color blend", false], 6, 7, 9 ["Color blend", false], 6, 14, 7, 9
]; ];
temp_surface = [ surface_create(1, 1) ]; temp_surface = [ surface_create(1, 1) ];
@ -97,6 +85,7 @@ function Node_Color_adjust(_x, _y, _group = noone) : Node_Processor(_x, _y, _gro
var _type = _data[12]; var _type = _data[12];
var _col = _data[13]; var _col = _data[13];
var _blm = _data[14];
if(_type == 0 && _output_index != 0) return []; if(_type == 0 && _output_index != 0) return [];
if(_type == 1 && _output_index != 1) return noone; if(_type == 1 && _output_index != 1) return noone;
@ -139,19 +128,19 @@ function Node_Color_adjust(_x, _y, _group = noone) : Node_Processor(_x, _y, _gro
return _col; return _col;
} }
surface_set_shader(_baseSurf, shader); surface_set_shader(_baseSurf, sh_color_adjust);
shader_set_uniform_i(uniform_mask_use, _m != DEF_SURFACE); shader_set_f("brightness", _bri);
texture_set_stage(uniform_mask, surface_get_texture(_m)); shader_set_f("exposure", _exp);
shader_set_f("contrast", _con);
shader_set_f("hue", _hue);
shader_set_f("sat", _sat);
shader_set_f("val", _val);
shader_set_uniform_f(uniform_bri, _bri); shader_set_color("blend", _bl, _bla);
shader_set_uniform_f(uniform_exp, _exp); shader_set_i("blendMode", _blm);
shader_set_uniform_f(uniform_con, _con);
shader_set_uniform_f(uniform_hue, _hue);
shader_set_uniform_f(uniform_sat, _sat);
shader_set_uniform_f(uniform_val, _val);
shader_set_uniform_f_array_safe(uniform_bl, [color_get_red(_bl) / 255, color_get_green(_bl) / 255, color_get_blue(_bl) / 255, 1.0]); shader_set_i("use_mask", _m != DEF_SURFACE);
shader_set_uniform_f(uniform_bla, _bla); shader_set_surface("mask", _m);
gpu_set_colorwriteenable(1, 1, 1, 0); gpu_set_colorwriteenable(1, 1, 1, 0);
draw_surface_safe(_surf, 0, 0); draw_surface_safe(_surf, 0, 0);

97
scripts/node_export/node_export.gml
View file

@ -114,6 +114,8 @@ function Node_Export(_x, _y, _group = noone) : Node(_x, _y, _group) constructor
inputs[| 13] = nodeValue("Subformat", self, JUNCTION_CONNECT.input, VALUE_TYPE.integer, 2) inputs[| 13] = nodeValue("Subformat", self, JUNCTION_CONNECT.input, VALUE_TYPE.integer, 2)
.setDisplay(VALUE_DISPLAY.enum_scroll, { data: png_format, update_hover: false }); .setDisplay(VALUE_DISPLAY.enum_scroll, { data: png_format, update_hover: false });
inputs[| 14] = nodeValue("Frame step", self, JUNCTION_CONNECT.input, VALUE_TYPE.integer, 1);
outputs[| 0] = nodeValue("Loop exit", self, JUNCTION_CONNECT.output, VALUE_TYPE.any, 0); outputs[| 0] = nodeValue("Loop exit", self, JUNCTION_CONNECT.output, VALUE_TYPE.any, 0);
outputs[| 1] = nodeValue("Preview", self, JUNCTION_CONNECT.output, VALUE_TYPE.surface, noone) outputs[| 1] = nodeValue("Preview", self, JUNCTION_CONNECT.output, VALUE_TYPE.surface, noone)
@ -200,7 +202,7 @@ function Node_Export(_x, _y, _group = noone) : Node(_x, _y, _group) constructor
input_display_list = [ input_display_list = [
["Export", false], 0, 1, 2, export_template, ["Export", false], 0, 1, 2, export_template,
["Format ", false], 3, 9, ["Format ", false], 3, 9,
["Animation", false], 12, 8, 5, 11, ["Animation", false], 12, 8, 5, 11, 14,
["Quality", false], 6, 7, 10, 13, ["Quality", false], 6, 7, 10, 13,
]; ];
@ -508,15 +510,16 @@ function Node_Export(_x, _y, _group = noone) : Node(_x, _y, _group) constructor
var suff = getInputData( 2); var suff = getInputData( 2);
var form = getInputData( 3); var form = getInputData( 3);
var rang = getInputData(12); var rang = getInputData(12);
var stps = getInputData(14);
var _ts = current_time;
if(form >= 1) { if(form >= 1) {
var rng_s = rang[0]; var rng_s = rang[0];
var rng_e = rang[1] == -1? TOTAL_FRAMES : rang[1]; var rng_e = rang[1] == -1? TOTAL_FRAMES : rang[1];
var rng_st = stps >= 1? (CURRENT_FRAME - rng_s) % stps : 0;
if(CURRENT_FRAME < rng_s) return; if(CURRENT_FRAME < rng_s) return;
if(CURRENT_FRAME > rng_e) return; if(CURRENT_FRAME > rng_e) return;
if(rng_st != 0) return;
} }
if(is_array(surf)) { if(is_array(surf)) {
@ -526,10 +529,10 @@ function Node_Export(_x, _y, _group = noone) : Node(_x, _y, _group) constructor
if(!is_surface(_surf)) continue; if(!is_surface(_surf)) continue;
if(form == NODE_EXPORT_FORMAT.gif) { if(form == NODE_EXPORT_FORMAT.gif) {
p = directory + "/" + string(i) + "/" + string_lead_zero(CURRENT_FRAME, 5) + ".png"; p = $"{directory}/{i}/{string_lead_zero(CURRENT_FRAME, 5)}.png";
} else { } else {
if(is_array(path) && array_length(path) == array_length(surf)) if(is_array(path) && array_length(path) == array_length(surf))
p = pathString(path[ safe_mod(i, array_length(path)) ], i); p = pathString(array_safe_get(path, i), i);
else else
p = pathString(path, i); p = pathString(path, i);
} }
@ -549,11 +552,10 @@ function Node_Export(_x, _y, _group = noone) : Node(_x, _y, _group) constructor
if(is_array(path)) p = path[0]; if(is_array(path)) p = path[0];
if(form == NODE_EXPORT_FORMAT.gif) if(form == NODE_EXPORT_FORMAT.gif)
p = directory + "/" + string_lead_zero(CURRENT_FRAME, 5) + ".png"; p = $"{directory}/{string_lead_zero(CURRENT_FRAME, 5)}.png";
else else
p = pathString(p); p = pathString(p);
//print("Exporting " + p);
p = save_surface(surf, p); p = save_surface(surf, p);
if(form != NODE_EXPORT_FORMAT.gif) { if(form != NODE_EXPORT_FORMAT.gif) {
@ -566,6 +568,42 @@ function Node_Export(_x, _y, _group = noone) : Node(_x, _y, _group) constructor
} }
} #endregion } #endregion
static renderCompleted = function() { #region
var surf = getInputData( 0);
var path = getInputData( 1);
var suff = getInputData( 2);
var extd = getInputData( 9);
var temp_path, target_path;
if(is_array(surf)) {
for(var i = 0; i < array_length(surf); i++) {
temp_path = $"{directory}/{i}/*.png";
if(is_array(path)) target_path = pathString(array_safe_get(path, i), i);
else target_path = pathString(path, i);
if(extd == 0) {
target_path = string_replace(target_path, ".png", ".gif");
renderGif(string_quote(temp_path), string_quote(target_path));
} else if(extd == 1) {
target_path = string_replace(target_path, ".png", ".webp");
renderWebp(temp_path, target_path);
}
}
} else {
target_path = pathString(path);
if(extd == 0) {
target_path = string_replace(target_path, ".png", ".gif");
renderGif(string_quote(directory + "/*.png"), string_quote(target_path));
} else if(extd == 1) {
target_path = string_replace(target_path, ".png", ".webp");
renderWebp(directory + "/", target_path);
}
}
updatedOutTrigger.setValue(true);
} #endregion
insp1UpdateTooltip = "Export"; insp1UpdateTooltip = "Export";
insp1UpdateIcon = [ THEME.sequence_control, 1, COLORS._main_value_positive ]; insp1UpdateIcon = [ THEME.sequence_control, 1, COLORS._main_value_positive ];
@ -633,6 +671,7 @@ function Node_Export(_x, _y, _group = noone) : Node(_x, _y, _group) constructor
inputs[| 12].setVisible(anim > 0); inputs[| 12].setVisible(anim > 0);
inputs[| 12].editWidget.maxx = TOTAL_FRAMES; inputs[| 12].editWidget.maxx = TOTAL_FRAMES;
inputs[| 13].setVisible(anim < 2); inputs[| 13].setVisible(anim < 2);
inputs[| 14].setVisible(anim > 0);
if(anim == NODE_EXPORT_FORMAT.gif) { if(anim == NODE_EXPORT_FORMAT.gif) {
inputs[| 9].display_data.data = format_animation; inputs[| 9].display_data.data = format_animation;
@ -664,48 +703,8 @@ function Node_Export(_x, _y, _group = noone) : Node(_x, _y, _group) constructor
export(); export();
if(CURRENT_FRAME < TOTAL_FRAMES - 1) if(CURRENT_FRAME == TOTAL_FRAMES - 1 && anim == NODE_EXPORT_FORMAT.gif)
return; renderCompleted();
if(anim != NODE_EXPORT_FORMAT.gif)
return;
var surf = getInputData( 0);
var path = getInputData( 1);
var suff = getInputData( 2);
var extd = getInputData( 9);
var rang = getInputData(12);
var temp_path, target_path;
if(is_array(surf)) {
for(var i = 0; i < array_length(surf); i++) {
temp_path = directory + "/" + string(i) + "/" + "*.png";
if(is_array(path))
target_path = pathString(path[ safe_mod(i, array_length(path)) ], i);
else
target_path = pathString(path, i);
if(extd == 0) {
target_path = string_replace(target_path, ".png", ".gif");
renderGif("\"" + temp_path + "\"", "\"" + target_path + "\"");
} else if(extd == 1) {
target_path = string_replace(target_path, ".png", ".webp");
renderWebp(temp_path, target_path);
}
}
} else {
target_path = pathString(path);
if(extd == 0) {
target_path = string_replace(target_path, ".png", ".gif");
renderGif("\"" + directory + "/*.png\"", "\"" + target_path + "\"");
} else if(extd == 1) {
target_path = string_replace(target_path, ".png", ".webp");
renderWebp(directory + "/", target_path);
}
}
updatedOutTrigger.setValue(true);
} #endregion } #endregion
static doApplyDeserialize = function() { onValueUpdate(3); } static doApplyDeserialize = function() { onValueUpdate(3); }

70
scripts/node_find_pixel/node_find_pixel.gml
View file

@ -2,14 +2,15 @@ function Node_Find_Pixel(_x, _y, _group = noone) : Node_Processor(_x, _y, _group
name = "Find pixel"; name = "Find pixel";
w = 96; w = 96;
shader = sh_find_pixel;
shader_dim = shader_get_uniform(shader, "dimension");
shader_tex = shader_get_sampler_index(shader, "texture");
inputs[| 0] = nodeValue("Surface in", self, JUNCTION_CONNECT.input, VALUE_TYPE.surface, 0); inputs[| 0] = nodeValue("Surface in", self, JUNCTION_CONNECT.input, VALUE_TYPE.surface, 0);
inputs[| 1] = nodeValue("Search color", self, JUNCTION_CONNECT.input, VALUE_TYPE.color, c_black); inputs[| 1] = nodeValue("Search color", self, JUNCTION_CONNECT.input, VALUE_TYPE.color, c_black);
inputs[| 2] = nodeValue("Tolerance", self, JUNCTION_CONNECT.input, VALUE_TYPE.float, 0)
.setDisplay(VALUE_DISPLAY.slider);
inputs[| 3] = nodeValue("Find all", self, JUNCTION_CONNECT.input, VALUE_TYPE.boolean, false)
outputs[| 0] = nodeValue("Position", self, JUNCTION_CONNECT.output, VALUE_TYPE.integer, [ 0, 0 ]) outputs[| 0] = nodeValue("Position", self, JUNCTION_CONNECT.output, VALUE_TYPE.integer, [ 0, 0 ])
.setDisplay(VALUE_DISPLAY.vector); .setDisplay(VALUE_DISPLAY.vector);
@ -17,31 +18,60 @@ function Node_Find_Pixel(_x, _y, _group = noone) : Node_Processor(_x, _y, _group
temp_surface = [ surface_create(1, 1) ]; temp_surface = [ surface_create(1, 1) ];
static processData = function(_output, _data, _output_index, _array_index = 0) { static processData = function(_output, _data, _output_index, _array_index = 0) { #region
var _surf = _data[0]; var _surf = _data[0];
var _col = _data[1]; var _col = _data[1];
var _tol = _data[2];
var _all = _data[3];
if(!is_surface(_surf)) return [0, 0]; if(!is_surface(_surf)) return [0, 0];
temp_surface[0] = surface_verify(temp_surface[0], 1, 1); var _buff = buffer_from_surface(_surf, false);
var _sw = surface_get_width_safe(_surf);
var _sh = surface_get_height_safe(_surf);
buffer_seek(_buff, buffer_seek_start, 0);
surface_set_target(temp_surface[0]); var res = [];
DRAW_CLEAR var r = color_get_red(_col) / 255;
shader_set(shader); var g = color_get_green(_col) / 255;
texture_set_stage(shader_tex, surface_get_texture(_surf)); var b = color_get_blue(_col) / 255;
shader_set_uniform_f(shader_dim, surface_get_width_safe(_surf), surface_get_height_safe(_surf));
draw_sprite_ext(s_fx_pixel, 0, 0, 0, 1, 1, 0, _col, 1);
shader_reset();
surface_reset_target();
var pos = surface_get_pixel(temp_surface[0], 0, 0); for( var i = 0; i < _sh; i++ )
var _x = round(color_get_red(pos) / 255 * surface_get_width_safe(_surf)); for( var j = 0; j < _sw; j++ ) {
var _y = round(color_get_green(pos) / 255 * surface_get_height_safe(_surf)); var _c = buffer_read(_buff, buffer_u32);
return [ _x, _y ]; var _r = ((_c & 0x000000FF) >> 0) / 255;
var _g = ((_c & 0x0000FF00) >> 8) / 255;
var _b = ((_c & 0x00FF0000) >> 16) / 255;
var _a = ((_c & 0xFF000000) >> 24) / 255;
if(_a == 0) continue;
if((abs(r - _r) + abs(g - _g) + abs(b - _b)) / 3 <= _tol) {
if(_all) array_push(res, [ j, i ]);
else return [ j, i ];
}
} }
static onDrawNode = function(xx, yy, _mx, _my, _s, _hover, _focus) { buffer_delete(_buff);
return _all? res : [ -1, -1 ];
//temp_surface[0] = surface_verify(temp_surface[0], 1, 1);
//surface_set_shader(temp_surface[0], sh_find_pixel);
// shader_set_surface("texture", _surf);
// shader_set_dim("dimension", _surf);
// draw_sprite_ext(s_fx_pixel, 0, 0, 0, 1, 1, 0, _col, 1);
//surface_reset_shader();
//var pos = surface_get_pixel(temp_surface[0], 0, 0);
//var _x = round(color_get_red(pos) / 255 * surface_get_width_safe(_surf));
//var _y = round(color_get_green(pos) / 255 * surface_get_height_safe(_surf));
//return [ _x, _y ];
} #endregion
static onDrawNode = function(xx, yy, _mx, _my, _s, _hover, _focus) { #region
var bbox = drawGetBbox(xx, yy, _s); var bbox = drawGetBbox(xx, yy, _s);
if(bbox.h <= 0) return; if(bbox.h <= 0) return;
@ -55,5 +85,5 @@ function Node_Find_Pixel(_x, _y, _group = noone) : Node_Processor(_x, _y, _group
draw_set_color(col); draw_set_color(col);
draw_rectangle(bbox.x0, bbox.y0, bbox.x1, bbox.y1, 0); draw_rectangle(bbox.x0, bbox.y0, bbox.x1, bbox.y1, 0);
} } #endregion
} }

3
scripts/node_particle/node_particle.gml
View file

@ -73,7 +73,8 @@ function Node_Particle(_x, _y, _group = noone) : Node_VFX_Spawner_Base(_x, _y, _
reset(); reset();
reLoop(); reLoop();
} }
runVFX(CURRENT_FRAME);
if(IS_PLAYING) runVFX(frame);
} #endregion } #endregion
function render(_time = CURRENT_FRAME) { #region function render(_time = CURRENT_FRAME) { #region

13
scripts/node_value/node_value.gml
View file

@ -784,10 +784,9 @@ function NodeValue(_name, _node, _connect, _type, _value, _tooltip = "") constru
default: default:
drop_key = "None"; drop_key = "None";
} }
} #endregion } setDropKey(); #endregion
setDropKey();
static resetDisplay = function() { #region static resetDisplay = function() { #region //////////////////// RESET DISPLAY ////////////////////
editWidget = noone; editWidget = noone;
switch(display_type) { switch(display_type) {
case VALUE_DISPLAY.button : #region case VALUE_DISPLAY.button : #region
@ -1042,6 +1041,7 @@ function NodeValue(_name, _node, _connect, _type, _value, _tooltip = "") constru
return setValueDirect(val, index); return setValueDirect(val, index);
}); });
extract_node = "Node_Vector4";
display_data.angle_display = QUARTERNION_DISPLAY.quarterion; display_data.angle_display = QUARTERNION_DISPLAY.quarterion;
break; #endregion break; #endregion
@ -1196,8 +1196,7 @@ function NodeValue(_name, _node, _connect, _type, _value, _tooltip = "") constru
} }
setDropKey(); setDropKey();
} #endregion } resetDisplay(); #endregion
resetDisplay();
static setType = function(_type) { #region static setType = function(_type) { #region
if(type == _type) return false; if(type == _type) return false;
@ -1735,12 +1734,12 @@ function NodeValue(_name, _node, _connect, _type, _value, _tooltip = "") constru
if(tags != VALUE_TAG.none) return true; if(tags != VALUE_TAG.none) return true;
if(_update) { if(_update) {
node.triggerRender(); if(!IS_PLAYING) node.triggerRender();
node.valueUpdate(self.index); node.valueUpdate(self.index);
node.clearCacheForward(); node.clearCacheForward();
} }
if(fullUpdate) RENDER_ALL if(fullUpdate && !IS_PLAYING) RENDER_ALL
if(!LOADING) PROJECT.modified = true; if(!LOADING) PROJECT.modified = true;

7
scripts/panel_data/panel_data.gml
View file

@ -218,6 +218,12 @@ function Panel(_parent, _x, _y, _w, _h) constructor {
refresh(); refresh();
} #endregion } #endregion
function switchContent(_content) { #region
var _ind = array_find(content, _content);
if(_ind == -1) return;
setTab(_ind);
} #endregion
function split_h(_w) { #region function split_h(_w) { #region
if(abs(_w) > w) { if(abs(_w) > w) {
print("Error: Split panel larger than size w (" + string(_w) + " > " + string(w) + ")"); print("Error: Split panel larger than size w (" + string(_w) + " > " + string(w) + ")");
@ -613,6 +619,7 @@ function Panel(_parent, _x, _y, _w, _h) constructor {
function setTab(tabIndex) { #region function setTab(tabIndex) { #region
if(tabIndex < 0) return; if(tabIndex < 0) return;
if(tabIndex >= array_length(content)) return; if(tabIndex >= array_length(content)) return;
if(content_index == tabIndex) return;
var prec = array_safe_get(content, content_index); var prec = array_safe_get(content, content_index);
if(prec) prec.onFocusEnd(); if(prec) prec.onFocusEnd();

4
scripts/panel_graph/panel_graph.gml
View file

@ -829,6 +829,10 @@ function Panel_Graph(project = PROJECT) : PanelContent() constructor {
ds_list_add(nodes_select_list, node_focus); ds_list_add(nodes_select_list, node_focus);
} else if(DOUBLE_CLICK) { } else if(DOUBLE_CLICK) {
PANEL_PREVIEW.setNodePreview(node_focus); PANEL_PREVIEW.setNodePreview(node_focus);
if(PREFERENCES.inspector_focus_on_double_click) {
if(PANEL_INSPECTOR.panel && struct_has(PANEL_INSPECTOR.panel, "switchContent"))
PANEL_INSPECTOR.panel.switchContent(PANEL_INSPECTOR);
}
} else { } else {
if(_prevFocus != node_focus) if(_prevFocus != node_focus)
bringNodeToFront(node_focus); bringNodeToFront(node_focus);

1
scripts/panel_workspace/panel_workspace.gml
View file

@ -1,4 +1,5 @@
function Panel_Workspace() : PanelContent() constructor { function Panel_Workspace() : PanelContent() constructor {
title = "Workspace";
workspaces = []; workspaces = [];
w = ui(480); w = ui(480);
h = ui(40); h = ui(40);

1
scripts/preferences/preferences.gml
View file

@ -37,6 +37,7 @@
PREFERENCES.panel_preview_dragging = MOD_KEY.alt; PREFERENCES.panel_preview_dragging = MOD_KEY.alt;
PREFERENCES.inspector_line_break_width = 500; PREFERENCES.inspector_line_break_width = 500;
PREFERENCES.inspector_focus_on_double_click = true;
PREFERENCES.node_show_render_status = false; PREFERENCES.node_show_render_status = false;
PREFERENCES.node_show_time = true; PREFERENCES.node_show_time = true;

5
scripts/string_functions/string_functions.gml
View file

@ -69,3 +69,8 @@ function string_to_var(str) { #region
gml_pragma("forceinline"); gml_pragma("forceinline");
return string_replace_all(string_lower(str), " ", "_"); return string_replace_all(string_lower(str), " ", "_");
} #endregion } #endregion
function string_quote(str) { #region
gml_pragma("forceinline");
return $"\"{str}\"";
} #endregion

1
scripts/surface_functions/surface_functions.gml
View file

@ -556,3 +556,4 @@ function surface_texture(surface) {
if(!is_surface(surface)) return -1; if(!is_surface(surface)) return -1;
return surface_get_texture(surface); return surface_get_texture(surface);
} }

12
shaders/sh_blend_luma/sh_blend_luma.fsh
View file

@ -19,7 +19,7 @@ float sampleMask() {
return (m.r + m.g + m.b) / 3. * m.a; return (m.r + m.g + m.b) / 3. * m.a;
} }
float hue2rgb( in float m1, in float m2, in float hue) { float hue2rgb( in float m1, in float m2, in float hue) { #region
if (hue < 0.0) if (hue < 0.0)
hue += 1.0; hue += 1.0;
else if (hue > 1.0) else if (hue > 1.0)
@ -33,9 +33,9 @@ float hue2rgb( in float m1, in float m2, in float hue) {
return m1 + (m2 - m1) * ((2.0 / 3.0) - hue) * 6.0; return m1 + (m2 - m1) * ((2.0 / 3.0) - hue) * 6.0;
else else
return m1; return m1;
} } #endregion
vec3 hsl2rgb( in vec3 hsl ) { vec3 hsl2rgb( in vec3 hsl ) { #region
float r, g, b; float r, g, b;
if(hsl.y == 0.) { if(hsl.y == 0.) {
r = hsl.z; r = hsl.z;
@ -55,9 +55,9 @@ vec3 hsl2rgb( in vec3 hsl ) {
} }
return vec3( r, g, b ); return vec3( r, g, b );
} } #endregion
vec3 rgb2hsl( in vec3 c ){ vec3 rgb2hsl( in vec3 c ) { #region
float h = 0.0; float h = 0.0;
float s = 0.0; float s = 0.0;
float l = 0.0; float l = 0.0;
@ -85,7 +85,7 @@ vec3 rgb2hsl( in vec3 c ){
h = h / 6.0; h = h / 6.0;
} }
return vec3( h, s, l ); return vec3( h, s, l );
} } #endregion
void main() { void main() {
vec4 _col0 = texture2D( gm_BaseTexture, v_vTexcoord ); vec4 _col0 = texture2D( gm_BaseTexture, v_vTexcoord );

120
shaders/sh_color_adjust/sh_color_adjust.fsh
View file

@ -15,9 +15,9 @@ uniform float sat;
uniform float val; uniform float val;
uniform vec4 blend; uniform vec4 blend;
uniform float blendAlpha; uniform int blendMode;
vec3 rgb2hsv(vec3 c) { vec3 rgb2hsv(vec3 c) { #region
vec4 K = vec4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0); vec4 K = vec4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
vec4 p = mix(vec4(c.bg, K.wz), vec4(c.gb, K.xy), step(c.b, c.g)); vec4 p = mix(vec4(c.bg, K.wz), vec4(c.gb, K.xy), step(c.b, c.g));
vec4 q = mix(vec4(p.xyw, c.r), vec4(c.r, p.yzx), step(p.x, c.r)); vec4 q = mix(vec4(p.xyw, c.r), vec4(c.r, p.yzx), step(p.x, c.r));
@ -25,14 +25,82 @@ vec3 rgb2hsv(vec3 c) {
float d = q.x - min(q.w, q.y); float d = q.x - min(q.w, q.y);
float e = 0.0000000001; float e = 0.0000000001;
return vec3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x); return vec3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);
} } #endregion
vec3 hsv2rgb(vec3 c) { vec3 hsv2rgb(vec3 c) { #region
vec4 K = vec4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0); vec4 K = vec4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
vec3 p = abs(fract(c.xxx + K.xyz) * 6.0 - K.www); vec3 p = abs(fract(c.xxx + K.xyz) * 6.0 - K.www);
return c.z * mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y); return c.z * mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y);
} #endregion
float hue2rgb( in float m1, in float m2, in float hue) { #region
if (hue < 0.0)
hue += 1.0;
else if (hue > 1.0)
hue -= 1.0;
if ((6.0 * hue) < 1.0)
return m1 + (m2 - m1) * hue * 6.0;
else if ((2.0 * hue) < 1.0)
return m2;
else if ((3.0 * hue) < 2.0)
return m1 + (m2 - m1) * ((2.0 / 3.0) - hue) * 6.0;
else
return m1;
} #endregion
vec3 hsl2rgb( in vec3 hsl ) { #region
float r, g, b;
if(hsl.y == 0.) {
r = hsl.z;
g = hsl.z;
b = hsl.z;
} else {
float m1, m2;
if(hsl.z <= 0.5)
m2 = hsl.z * (1. + hsl.y);
else
m2 = hsl.z + hsl.y - hsl.z * hsl.y;
m1 = 2. * hsl.z - m2;
r = hue2rgb(m1, m2, hsl.x + 1. / 3.);
g = hue2rgb(m1, m2, hsl.x);
b = hue2rgb(m1, m2, hsl.x - 1. / 3.);
} }
return vec3( r, g, b );
} #endregion
vec3 rgb2hsl( in vec3 c ) { #region
float h = 0.0;
float s = 0.0;
float l = 0.0;
float r = c.r;
float g = c.g;
float b = c.b;
float cMin = min( r, min( g, b ) );
float cMax = max( r, max( g, b ) );
l = ( cMax + cMin ) / 2.0;
if ( cMax > cMin ) {
float cDelta = cMax - cMin;
s = l < .5 ? cDelta / ( cMax + cMin ) : cDelta / ( 2.0 - ( cMax + cMin ) );
if ( r == cMax )
h = ( g - b ) / cDelta;
else if ( g == cMax )
h = 2.0 + ( b - r ) / cDelta;
else
h = 4.0 + ( r - g ) / cDelta;
if ( h < 0.0)
h += 6.0;
h = h / 6.0;
}
return vec3( h, s, l );
} #endregion
void main() { void main() {
vec4 col = texture2D( gm_BaseTexture, v_vTexcoord ); vec4 col = texture2D( gm_BaseTexture, v_vTexcoord );
@ -58,7 +126,49 @@ void main() {
col_cbh = clamp(col_cbh, vec4(0.), vec4(1.)); col_cbh = clamp(col_cbh, vec4(0.), vec4(1.));
//blend //blend
col_cbh.rgb = mix(col_cbh.rgb, blend.rgb, blendAlpha); vec3 col3 = col_cbh.rgb;
vec3 bld3 = blend.rgb;
vec3 bmix = blend.rgb;
vec3 chsv = rgb2hsv(col3);
vec3 bhsv = rgb2hsv(bld3);
float lum = dot(col3, vec3(0.2126, 0.7152, 0.0722));
if(blendMode == 0) bmix = bld3;
else if(blendMode == 1) bmix = col3 + bld3;
else if(blendMode == 2) bmix = col3 - bld3;
else if(blendMode == 3) bmix = col3 * bld3;
else if(blendMode == 4) bmix = 1. - (1. - col3) * (1. - bld3);
else if(blendMode == 5) bmix = lum > 0.5? (1. - (1. - 2. * (col3 - 0.5)) * (1. - bld3)) : ((2. * col3) * bld3);
else if(blendMode == 6) bmix = hsv2rgb(vec3(bhsv.r, chsv.g, chsv.b));
else if(blendMode == 7) bmix = hsv2rgb(vec3(chsv.r, mix(chsv.g, bhsv.g, blend.a), chsv.b));
else if(blendMode == 8) {
vec3 chsl = rgb2hsl(col3);
vec3 bhsl = rgb2hsl(bld3);
chsl.z = mix(chsl.z, bhsl.z, blend.a);
bmix = hsl2rgb(chsl);
}
else if(blendMode == 9) {
bmix.r = max(col3.r, bld3.r);
bmix.g = max(col3.g, bld3.g);
bmix.b = max(col3.b, bld3.b);
}
else if(blendMode == 10) {
bmix.r = min(col3.r, bld3.r);
bmix.g = min(col3.g, bld3.g);
bmix.b = min(col3.b, bld3.b);
}
else if(blendMode == 11) bmix = bld3;
else if(blendMode == 12) bmix = abs(col3 - bld3);
if(blendMode != 7 && blendMode != 8)
col_cbh.rgb = mix(col_cbh.rgb, bmix, blend.a);
else
col_cbh.rgb = bmix;
//mask //mask
if(use_mask == 1) { if(use_mask == 1) {