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Aman Karmani 2f299c0b8b avutil: use getauxval(3) for CPU capabilities on linux/android ARM 
getauxval is marginally faster, and works even when procfs is not mounted

support on Linux was added in glibc 2.16
support on Android was added in 4.4 (API 20)
fixes #6578

Signed-off-by: Aman Karmani <aman@tmm1.net>
2022-02-07 13:42:40 -08:00
compat Replace all occurences of av_mallocz_array() by av_calloc() 2021-09-20 01:03:52 +02:00
doc avutil/fifo: Deprecate old FIFO API 2022-02-07 00:31:49 +01:00
ffbuild Makefile: Redo duplicating object files in shared builds 2022-01-04 05:01:04 +01:00
fftools ffmpeg: switch to new FIFO API 2022-02-07 00:31:23 +01:00
libavcodec avcodec/qsvenc: Reindent after the previous commit 2022-02-07 00:31:23 +01:00
libavdevice lavd/jack: switch to the new FIFO API 2022-02-07 00:31:23 +01:00
libavfilter lavfi/vf_deshake_opencl: switch to new FIFO API 2022-02-07 00:31:23 +01:00
libavformat lavf/async: switch to new FIFO API 2022-02-07 00:31:23 +01:00
libavutil avutil: use getauxval(3) for CPU capabilities on linux/android ARM 2022-02-07 13:42:40 -08:00
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
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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.