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FFmpeg git repo
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Rémi Denis-Courmont bd226fdd74 lavc/h264dsp: R-V V intra loop filter 
As with the inter loop filter, performance metrics seem to be biased in
favour of the C implementation because checkasm inputs almost always
fall in the no-op case.

h264_h_loop_filter_chroma_intra_8bpp_c:                 82.8 ( 1.00x)
h264_h_loop_filter_chroma_intra_8bpp_rvv_i32:           72.6 ( 1.14x)
h264_h_loop_filter_chroma_mbaff_intra_8bpp_c:           41.1 ( 1.00x)
h264_h_loop_filter_chroma_mbaff_intra_8bpp_rvv_i32:     72.6 ( 0.57x)
h264_h_loop_filter_luma_intra_8bpp_c:                  166.1 ( 1.00x)
h264_h_loop_filter_luma_intra_8bpp_rvv_i32:            395.4 ( 0.42x)
h264_h_loop_filter_luma_mbaff_intra_8bpp_c:             93.3 ( 1.00x)
h264_h_loop_filter_luma_mbaff_intra_8bpp_rvv_i32:      395.4 ( 0.24x)
h264_v_loop_filter_chroma_intra_8bpp_c:                134.8 ( 1.00x)
h264_v_loop_filter_chroma_intra_8bpp_rvv_i32:           51.6 ( 2.61x)
h264_v_loop_filter_luma_intra_8bpp_c:                  468.1 ( 1.00x)
h264_v_loop_filter_luma_intra_8bpp_rvv_i32:            134.8 ( 3.47x)
2024-12-17 09:00:28 +02:00
compat compat/w32pthreads: change pthread_t into pointer to malloced struct 2024-12-16 09:43:19 +01:00
doc lavc/packet: add API for an AVPacket-based AVContainerFifo 2024-12-15 14:05:33 +01:00
ffbuild
fftools fftools/sync_queue: switch from AVFifo+ObjPool to AVContainerFifo 2024-12-15 14:05:34 +01:00
libavcodec lavc/h264dsp: R-V V intra loop filter 2024-12-17 09:00:28 +02:00
libavdevice
libavfilter
libavformat avformat/hevc: add support for writing alpha layer 2024-12-16 00:50:52 +01:00
libavutil lavc/container_fifo: move to lavu and make public 2024-12-15 14:05:15 +01:00
libpostproc
libswresample
libswscale swscale/slice: fix init of 32 bpc planes 2024-12-16 12:21:55 +01:00
presets
tests fftools/ffprobe: add analyze_frames option for CC and grain detection 2024-12-13 22:41:31 -06:00
tools
.gitattributes
.gitignore
.mailmap
Changelog avcodec/libx265: add alpha layer encoding support 2024-12-16 00:50:52 +01:00
configure configure: add leaddec blockdsp dependency 2024-12-11 07:52:25 +11:00
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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.