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FFmpeg git repo
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Logan Lyu 97a9d12657 lavc/aarch64: new optimization for 8-bit hevc_qpel_v 
checkasm bench:

put_hevc_qpel_v4_8_c: 138.1
put_hevc_qpel_v4_8_neon: 41.1
put_hevc_qpel_v6_8_c: 276.6
put_hevc_qpel_v6_8_neon: 60.9
put_hevc_qpel_v8_8_c: 478.9
put_hevc_qpel_v8_8_neon: 72.9
put_hevc_qpel_v12_8_c: 1072.6
put_hevc_qpel_v12_8_neon: 203.9
put_hevc_qpel_v16_8_c: 1852.1
put_hevc_qpel_v16_8_neon: 264.1
put_hevc_qpel_v24_8_c: 4137.6
put_hevc_qpel_v24_8_neon: 586.9
put_hevc_qpel_v32_8_c: 7579.1
put_hevc_qpel_v32_8_neon: 1036.6
put_hevc_qpel_v48_8_c: 16355.6
put_hevc_qpel_v48_8_neon: 2326.4
put_hevc_qpel_v64_8_c: 33545.1
put_hevc_qpel_v64_8_neon: 4126.4

Co-Authored-By: J. Dekker <jdek@itanimul.li>
Signed-off-by: Martin Storsjö <martin@martin.st>
2023-10-31 14:14:21 +02:00
compat configure: Set WIN32_LEAN_AND_MEAN at configure time 2023-08-14 22:57:28 +03:00
doc doc/filters: add one more example for feedback filter 2023-10-30 15:12:12 +01:00
ffbuild
fftools ffprobe: print the non-diegetic stream disposition flag 2023-10-25 21:55:01 -03:00
libavcodec lavc/aarch64: new optimization for 8-bit hevc_qpel_v 2023-10-31 14:14:21 +02:00
libavdevice Bump versions after 6.1 2023-10-29 16:19:14 +01:00
libavfilter avfilter/vf_feedback: add timeline support 2023-10-30 16:06:46 +01:00
libavformat Bump versions after 6.1 2023-10-29 16:19:14 +01:00
libavutil aarch64: Simplify the linux runtime cpu detection code 2023-10-31 12:23:27 +02:00
libpostproc Bump versions after 6.1 2023-10-29 16:19:14 +01:00
libswresample Bump versions after 6.1 2023-10-29 16:19:14 +01:00
libswscale Bump versions after 6.1 2023-10-29 16:19:14 +01:00
presets
tests avutil/channel_layout: add a 3.1.2 channel layout 2023-10-27 08:46:34 -03:00
tools tools/target_dec_fuzzer: Adjust wmapro threshold 2023-10-03 20:09:27 +02:00
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Changelog Changelog: mark 6.1 2023-10-29 12:55:37 -03:00
configure configure: Improve aarch64 feature detection on older, broken Clang versions 2023-10-31 12:23:31 +02:00
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MAINTAINERS MAINTAINERS: add entry for jpegxl* 2023-10-17 08:44:23 -04:00
Makefile tools: Don't include the direct library names when linking 2023-10-02 22:49:07 +03:00
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.