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c541ecf0dc
This increases the group multiplier as per T-Head C910 benchmarks: alac_append_extra_bits_mono_c: 803.0 alac_append_extra_bits_stereo_c: 1604.2 alac_decorrelate_stereo_c: 1077.5 LMUL=1 alac_append_extra_bits_mono_rvv_i32: 418.2 alac_append_extra_bits_stereo_rvv_i32: 693.2 alac_decorrelate_stereo_rvv_i32: 673.5 LMUL=2 alac_append_extra_bits_mono_rvv_i32: 382.2 alac_append_extra_bits_stereo_rvv_i32: 648.2 alac_decorrelate_stereo_rvv_i32: 542.7 LMUL=4 alac_append_extra_bits_mono_rvv_i32: 241.5 alac_append_extra_bits_stereo_rvv_i32: 512.7 alac_decorrelate_stereo_rvv_i32: 364.2 LMUL=8 alac_append_extra_bits_mono_rvv_i32: 239.7 alac_append_extra_bits_stereo_rvv_i32: 497.2 alac_decorrelate_stereo_rvv_i32: 426.7
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.