mirror of
https://mirror.skon.top/https://github.com/FFmpeg/FFmpeg
synced 2026-04-23 02:11:14 +08:00
87052c0933
chrRangeFromJpeg16_1920_c: 3153.9 chrRangeFromJpeg16_1920_sse4: 1770.0 (1.78x) chrRangeFromJpeg16_1920_avx2: 891.5 (3.54x) chrRangeToJpeg16_1920_c: 3165.0 chrRangeToJpeg16_1920_sse4: 1953.2 (1.62x) chrRangeToJpeg16_1920_avx2: 973.0 (3.25x) lumRangeFromJpeg16_1920_c: 1298.5 lumRangeFromJpeg16_1920_sse4: 886.5 (1.46x) lumRangeFromJpeg16_1920_avx2: 447.7 (2.90x) lumRangeToJpeg16_1920_c: 1905.0 lumRangeToJpeg16_1920_sse4: 993.0 (1.92x) lumRangeToJpeg16_1920_avx2: 498.9 (3.82x)
FFmpeg README
FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.
Libraries
libavcodecprovides implementation of a wider range of codecs.libavformatimplements streaming protocols, container formats and basic I/O access.libavutilincludes hashers, decompressors and miscellaneous utility functions.libavfilterprovides means to alter decoded audio and video through a directed graph of connected filters.libavdeviceprovides an abstraction to access capture and playback devices.libswresampleimplements audio mixing and resampling routines.libswscaleimplements 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,ismindexandqt-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.