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FFmpeg git repo
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Ramiro Polla caaec2ea95 swscale/x86/rgb2rgb: disable rgb24toyv12_mmxext for x86_64 
The mmxext implementation is slower than the C version in x86_64.

                                m32               m64
rgb24toyv12_16_200_c:       24942.7           14812.6
rgb24toyv12_16_200_mmxext:  17857.2 ( 1.40x)  17400.4 ( 0.85x)
rgb24toyv12_128_60_c:       56892.9           35616.9
rgb24toyv12_128_60_mmxext:  40730.9 ( 1.40x)  39610.4 ( 0.90x)
rgb24toyv12_512_16_c:       58402.7           37209.4
rgb24toyv12_512_16_mmxext:  44842.4 ( 1.30x)  41136.2 ( 0.90x)
rgb24toyv12_1920_4_c:       54827.4           34737.4
rgb24toyv12_1920_4_mmxext:  51169.9 ( 1.07x)  34818.9 ( 1.00x)
2024-09-06 23:06:38 +02:00
compat
doc lavc: add HEVC Multiview Main profile 2024-09-06 13:59:28 +02:00
ffbuild
fftools fftools/ffmpeg: Fix honor -r output option with streamcopy 2024-09-04 13:01:37 +02:00
libavcodec lavc/vvc: Remove experimental flag 2024-09-06 22:14:52 +08:00
libavdevice
libavfilter avfilter/af_bs2b: remove unecessary initializer from layouts 2024-09-05 12:36:04 -03:00
libavformat avformat/mxfenc: Fix guess frame_rate 2024-09-04 13:01:37 +02:00
libavutil lavu/opt: handle UINT options as the POD they are 2024-09-06 13:59:04 +02:00
libpostproc
libswresample
libswscale swscale/x86/rgb2rgb: disable rgb24toyv12_mmxext for x86_64 2024-09-06 23:06:38 +02:00
presets
tests checkasm/sw_rgb: add rgb24toyv12 tests 2024-09-06 23:06:35 +02:00
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README.md

FFmpeg README

FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.

Libraries

  • libavcodec provides implementation of a wider range of codecs.
  • libavformat implements streaming protocols, container formats and basic I/O access.
  • libavutil includes hashers, decompressors and miscellaneous utility functions.
  • libavfilter provides means to alter decoded audio and video through a directed graph of connected filters.
  • libavdevice provides an abstraction to access capture and playback devices.
  • libswresample implements audio mixing and resampling routines.
  • libswscale implements color conversion and scaling routines.

Tools

  • ffmpeg is a command line toolbox to manipulate, convert and stream multimedia content.
  • ffplay is a minimalistic multimedia player.
  • ffprobe is a simple analysis tool to inspect multimedia content.
  • Additional small tools such as aviocat, ismindex and qt-faststart.

Documentation

The offline documentation is available in the doc/ directory.

The online documentation is available in the main website and in the wiki.

Examples

Coding examples are available in the doc/examples directory.

License

FFmpeg codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.

Contributing

Patches should be submitted to the ffmpeg-devel mailing list using git format-patch or git send-email. Github pull requests should be avoided because they are not part of our review process and will be ignored.