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Andreas Rheinhardt 06fafbe01e avcodec/mpeg12enc: Don't initialize ff_rl_mpeg2 unnecessarily 
ff_rl_mpeg1 and ff_rl_mpeg2 differ only in RLTable.table_vlc,
which ff_rl_init() does not use to initialize RLTable.max_level,
RLTable.max_run and RLTable.index_run. This implies
that these tables agree for ff_rl_mpeg1 and ff_rl_mpeg2;
hence one can just use one of them and avoid calling ff_rl_init()
ff_rl_mpeg2 alltogether.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2022-10-27 15:44:38 +02:00
compat
doc doc/encoders: Add doc for av1_qsv 2022-10-24 13:30:22 +08:00
ffbuild
fftools fftools/ffmpeg_demux: stop modifying OptionsContext 2022-10-25 11:13:03 +02:00
libavcodec avcodec/mpeg12enc: Don't initialize ff_rl_mpeg2 unnecessarily 2022-10-27 15:44:38 +02:00
libavdevice
libavfilter avfilter/vf_threshold: fix handling of zero threshold 2022-10-27 10:23:24 +02:00
libavformat avformat/mux: Constify validate_codec_tag() 2022-10-27 15:32:37 +02:00
libavutil avutil/integer: Use '|' instead of '+' where it is more natural 2022-10-24 20:11:20 +02:00
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configure libavcodec/qsvenc_av1: add av1_qsv encoder 2022-10-24 13:30:22 +08:00
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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.