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FFmpeg git repo
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Victoria Zhislina d0aefc3706 avfilter/vf_zscale: add slice threading support 
By ffmpeg threading support implementation via frame slicing and doing
zimg_filter_graph_build that used to take 30-60% of each frame processig
only if necessary (some parameters changed)
the performance increase vs original version
in video downscale and color conversion  >4x is seen
on 64 cores Intel Xeon, 3x on i7-6700K (4 cores with HT)

Signed-off-by: Victoria Zhislina <Victoria.Zhislina@intel.com>
2022-03-03 17:35:48 +01:00
compat
doc avfilter/avf_abitscope: refactor code & add trace mode 2022-03-03 17:35:48 +01:00
ffbuild Makefile: Redo duplicating object files in shared builds 2022-01-04 05:01:04 +01:00
fftools fftools/ffmpeg: Don't presume frame_queue to have been allocated 2022-03-03 03:48:04 +01:00
libavcodec avcodec: [loongarch] Optimize Hevc_mc_uni/w with LSX. 2022-03-01 23:53:40 +01:00
libavdevice libavcodec, libavdevice: Remove unnecessary includes of version.h 2022-02-24 22:36:15 +02:00
libavfilter avfilter/vf_zscale: add slice threading support 2022-03-03 17:35:48 +01:00
libavformat avformat/avisynth: fix fallbacks for four frameprops 2022-03-02 17:45:40 -05:00
libavutil avutil: [loongarch] Update loongson_intrinsics.h to v1.1.0 2022-03-01 23:53:40 +01:00
libpostproc lib*/version.h: Bump Versions after release/5.0 branch 2022-01-04 14:29:06 +01:00
libswresample lib*/version.h: Bump Versions after release/5.0 branch 2022-01-04 14:29:06 +01:00
libswscale swscale: Take the destination range into account for yuv->rgb->yuv conversions 2022-02-25 11:01:17 +02:00
presets
tests configure: stop allowing disabling lzo 2022-02-26 14:22:07 -03:00
tools tools/target_bsf_fuzzer: simplify the loop feeding packets to the filter 2022-02-28 12:06:55 -03:00
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.gitignore Remove mentions of a nonexistent avversion.h 2022-02-25 11:01:17 +02:00
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Changelog lavc/mpeg*: drop the XvMC hwaccel code 2022-02-15 10:16:15 +01:00
configure configure: stop allowing disabling lzo 2022-02-26 14:22:07 -03:00
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MAINTAINERS lavc/mpeg*: drop the XvMC hwaccel code 2022-02-15 10:16:15 +01:00
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README.md
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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.