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Nuo Mi 6464c157d5 x86/vvcdec: add dmvr avx2 code 
Decoder-Side Motion Vector Refinement is about 4~8% CPU usage for some clips

here is the test result for one time
clips                                     | before| after | delta
------------------------------------------|-------|-------|------
RitualDance_1920x1080_60_10_420_37_RA.266 | 338.7 | 354.3 |4.61%
NovosobornayaSquare_1920x1080.bin         | 320.3 | 329.3 |2.81%
Tango2_3840x2160_60_10_420_27_LD.266      | 83.3  | 83.7  |0.48%
RitualDance_1920x1080_60_10_420_32_LD.266 | 320.7 | 327.3 |2.06%
Chimera_8bit_1080P_1000_frames.vvc        | 360.7 | 381.0 |5.63%
BQTerrace_1920x1080_60_10_420_22_RA.vvc   | 161.7 | 163.0 |0.80%
2024-08-15 20:19:45 +08:00
compat
doc doc/mailing-list-faq: remove dead link 2024-08-14 18:25:37 +02:00
ffbuild
fftools fftools/ffmpeg: show video stats in progress output without filters 2024-08-14 15:17:58 +02:00
libavcodec x86/vvcdec: add dmvr avx2 code 2024-08-15 20:19:45 +08:00
libavdevice libavdevice/gdigrab: change hwnd tail check fail logic to !=null 2024-08-15 20:10:33 +08:00
libavfilter avfilter/video: don't zero allocated buffers if memory poisoning is used 2024-08-12 11:41:38 -03:00
libavformat avformat/iamf_parse: ignore Audio Elements with an unsupported type 2024-08-14 23:55:40 -03:00
libavutil avutil/hwcontext_videotoolbox: silence warning for RGB 2024-08-15 20:10:33 +08:00
libpostproc
libswresample
libswscale swscale/output: don't leave the alpha channel undefined in vuyx and xv36le 2024-08-13 14:49:41 -03:00
presets
tests avcodec/h264_mp4toannexb: Prepend SPS/PPS to buffering period SEI 2024-08-14 13:20:56 +02:00
tools tools/target_dec_fuzzer: Check that FFv1 doesnt leave uninitialized memory in its buffers 2024-08-14 18:20:57 +02:00
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Changelog lavc/qsvdec: Add VVC decoder 2024-07-30 13:40:21 +08:00
configure configure: check if assembler supports RV zicbop 2024-07-30 18:41:51 +03:00
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Makefile add tools/target_swr_fuzzer 2024-08-08 15:26:52 +02:00
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.