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Paul B Mahol 5abcf45d75 avformat/yuv4mpegdec: simplify math 
This one actually works with hd1080 y4m files when seeking backwards.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
2018-05-03 14:15:07 +02:00
compat w32pthreads: always use Vista+ API, drop XP support 2018-04-09 21:58:39 +02:00
doc avfilter/vf_convolution: add horizontal/row mode 2018-05-03 10:55:10 +02:00
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libavcodec lavc: Add VP9 metadata bitstream filter 2018-05-02 01:21:40 +01:00
libavdevice avdevice/decklink_dec: unref packets on avpacket_queue_put error 2018-04-30 22:44:58 +02:00
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libavformat avformat/yuv4mpegdec: simplify math 2018-05-03 14:15:07 +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 a mean to alter decoded Audio and Video through chain of 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.