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Rémi Denis-Courmont 5c15cb138e lavc/vorbisdec: use intermediate variables 
The compiler cannot infer that the two float vectors do not alias,
causing unnecessary extra loads and serialisation. This patch caches
the two input values in local variables so that compiler can optimise
individual loop iterations.
2022-09-19 14:07:27 -03:00
compat compat/cuda: switch from powf to __powf intrinsic 2022-09-03 20:27:34 +02:00
doc doc/filters: add speechnorm examples 2022-09-18 19:43:42 +02:00
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fftools fftools/ffplay: fix rotation incorrect when frame contains the displaymatrix 2022-09-15 16:16:16 +08:00
libavcodec lavc/vorbisdec: use intermediate variables 2022-09-19 14:07:27 -03:00
libavdevice avutil/internal: Move avpriv-file API to a header of its own 2022-09-03 15:41:44 +02:00
libavfilter avfilter/af_afftdn: add double sample format support 2022-09-18 22:43:58 +02:00
libavformat avformat/aptxdec: Don't set AV_PKT_FLAG_CORRUPT mistakenly 2022-09-19 17:05:33 +02:00
libavutil x86/tx_float: add asm call versions of the 2pt and 4pt transforms 2022-09-19 06:01:06 +02:00
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tools tools/target_dec_fuzzer: Adjust threshold for Jpeg2000 2022-09-16 21:30:59 +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.