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Nuo Mi 2e936f2c11 avcodec/vvdec: refact, ff_vvc_deblock_bs use CodingUnit/TransformUnit instead of fc->tabs
perf result for:
"perf record -F 99 ./ffmpeg_g -i  Tango2_3840x2160_60_10_420_27_LD.266 -f null -"

before: 5.24%
1.87%  ffmpeg_g  [.] vvc_deblock_bs_chroma
1.72%  ffmpeg_g  [.] ff_vvc_deblock_bs
1.65%  ffmpeg_g  [.] vvc_deblock_bs_luma

after: 3.48%
1.84%  ffmpeg_g  [.] vvc_deblock_bs_chroma
1.64%  ffmpeg_g  [.] ff_vvc_deblock_bs + vvc_deblock_bs_luma(inlined)
2024-10-16 20:28:09 +08:00
compat
doc lavu: bump minor and add APIChanges entries for new 32bpc pixfmts 2024-10-15 17:45:18 +02:00
ffbuild
fftools fftools/ffmpeg_filter: treat apad filter as a source 2024-10-15 10:38:48 +02:00
libavcodec avcodec/vvdec: refact, ff_vvc_deblock_bs use CodingUnit/TransformUnit instead of fc->tabs 2024-10-16 20:28:09 +08:00
libavdevice avdevice/decklink_dec: fix leaks on error 2024-09-29 10:12:41 +02:00
libavfilter vulkan: enable selecting a compatible representation of format 2024-10-16 12:48:15 +02:00
libavformat avformat/riff: map Y410 fourcc to RAWVIDEO decoder 2024-10-13 20:44:09 -03:00
libavutil vulkan: do not create imageviews with video encode/decode usage 2024-10-16 12:48:16 +02:00
libpostproc
libswresample arm: Consistently use proper interworking function returns 2024-10-09 15:52:51 +03:00
libswscale swscale/input: add input support for RGBF16 2024-10-14 20:46:24 +02:00
presets
tests lavu/pixfmt: add AV_PIX_FMT_RGB96 2024-10-15 17:45:17 +02:00
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Changelog configure: drop yasm support 2024-10-06 01:32:47 +02:00
configure configure: Only try to use the -no_warn_duplicate_libraries flag on Darwin 2024-10-15 09:53:14 +03:00
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MAINTAINERS MAINTAINERS: update myself for dvdvideo, rcwtdec, rcwtenc 2024-09-29 17:38:12 +02:00
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RELEASE RELEASE: update release number after release/7.1 branch 2024-10-09 01:55:50 +02:00

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.