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Haihao Xiang 7491545320 lavfi/qsv: use QSVVPPContext as base context in vf_vpp_qsv/vf_overlay_qsv 2 years ago
compat compat/cuda: switch from powf to __powf intrinsic 2 years ago
doc avfilter: add fractional delay IR source filter 2 years ago
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fftools ffprobe: expose AVAmbientViewingEnvironment side data in AVFrames 2 years ago
libavcodec lavc/qsvenc_jpeg: accept YUYV422 and BGRA in system memory 2 years ago
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libavformat avformat/segment: calculate segment durations correctly. 2 years ago
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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.