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![]() T-Head C908: h264_biweight2_8_c: 313.7 ( 1.00x) h264_biweight2_8_rvv_i32: before 239.5 ( 1.23x) h264_biweight2_8_rvv_i32: after 72.7 ( 4.31x) h264_biweight4_8_c: 582.0 ( 1.00x) h264_biweight4_8_rvv_i32: before 471.0 ( 1.16x) h264_biweight4_8_rvv_i32: after 91.5 ( 6.36x) h264_biweight8_8_c: 1110.0 ( 1.00x) h264_biweight8_8_rvv_i32: before 943.3 ( 1.10x) h264_biweight8_8_rvv_i64: after 147.0 ( 7.55x) SpacemiT X60: h264_biweight2_8_c: 311.4 ( 1.00x) h264_biweight2_8_rvv_i32: before 363.1 ( 0.83x) h264_biweight2_8_rvv_i32: after 103.1 ( 3.02x) h264_biweight4_8_c: 571.9 ( 1.00x) h264_biweight4_8_rvv_i32: before 717.4 ( 0.78x) h264_biweight4_8_rvv_i32: after 71.8 ( 7.96x) h264_biweight8_8_c: 1103.1 ( 1.00x) h264_biweight8_8_rvv_i32: before 1415.2 ( 0.76x) h264_biweight8_8_rvv_i64: ater 92.8 (11.88x) |
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compat | ||
doc | ||
ffbuild | ||
fftools | ||
libavcodec | ||
libavdevice | ||
libavfilter | ||
libavformat | ||
libavutil | ||
libpostproc | ||
libswresample | ||
libswscale | ||
presets | ||
tests | ||
tools | ||
.gitattributes | ||
.gitignore | ||
.mailmap | ||
Changelog | ||
configure | ||
CONTRIBUTING.md | ||
COPYING.GPLv2 | ||
COPYING.GPLv3 | ||
COPYING.LGPLv2.1 | ||
COPYING.LGPLv3 | ||
CREDITS | ||
INSTALL.md | ||
LICENSE.md | ||
MAINTAINERS | ||
Makefile | ||
README.md | ||
RELEASE |
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
andqt-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.