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Anton Khirnov 984c751b12 lavfi/vf_decimate: use inverse of output framerate as timebase 
This filter currently keeps the input timebase, but produces CFR output.
It is thus simpler to use 1/output fps as the output timebase.

Also, set output frame durations.
2022-10-13 10:19:13 +02:00
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doc avutil/pixfmt.h: add native-endian RGB32F and RGBA32F formats 2022-10-11 16:31:15 -03:00
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fftools ffmpeg: Make find_stream_info behave like a normal per-file option 2022-10-13 10:19:13 +02:00
libavcodec riscv: fix scalar product initialisation 2022-10-13 10:17:38 +02:00
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libavfilter lavfi/vf_decimate: use inverse of output framerate as timebase 2022-10-13 10:19:13 +02:00
libavformat avformat/mp3dec: remove a call to avio_tell() 2022-10-08 22:56:30 +08:00
libavutil riscv: fix scalar product initialisation 2022-10-13 10:17:38 +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.