Zhao ZhiliandZhao Zhili 1e86a92a1c lavu/aarch64: unroll butterflies_float to 8 floats/iter
butterflies_float_neon:   before           after
  Cortex-A76 (gcc 12.4):  163.1 (3.95x)    147.0 (4.37x)
  Apple M1 (clang 16):      0.7 (0.85x)      0.6 (0.99x)

Signed-off-by: Zhao Zhili <quinkblack@foxmail.com>
2026-06-03 09:36:59 +00:00
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2026-05-15 20:35:56 -03:00
2025-08-08 21:51:15 +00:00
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2023-03-01 21:59:10 +01:00
2025-06-23 14:48:40 +02:00
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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.

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Description
MIRROR: FFmpeg is a collection of libraries and tools to process multimedia content
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