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Lynne 9e94c35941
Revert "x86/tx_float: remove vgatherdpd usage" 
This reverts commit 82a68a8771.

Smarter slow ISA penalties makes gathers still useful.
The intention is to use gathers with the final stage of non-ptwo iMDCTs,
where they give benefit.
 		2022-05-21 02:10:02 +02:00
compat Replace all occurences of av_mallocz_array() by av_calloc() 2021-09-20 01:03:52 +02:00
doc doc/muxers: note write_btrt option for MOV/MP4 2022-05-16 13:56:38 +05:30
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fftools opt_common: note D and T type streams for completeness. 2022-05-20 23:42:23 +05:30
libavcodec avcodec/mpegvideo: Move float.h inclusion to mpegvideoenc.h 2022-05-19 19:16:23 +02:00
libavdevice avdevice/dshow: reuse unused variables. 2022-05-12 22:06:44 -03:00
libavfilter avfilter/formats: Constify channel_layout in ff_add_channel_layout() 2022-05-19 20:20:38 +02:00
libavformat avformat/sccenc: avoid potential invalid access 2022-05-19 21:17:31 +08:00
libavutil Revert "x86/tx_float: remove vgatherdpd usage" 2022-05-21 02:10:02 +02:00
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Changelog lavc/pgs_frame_merge_bsf: add bsf to merge PGS segments 2022-05-10 10:03:30 +02:00
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MAINTAINERS avformat/image2: add Jpeg XL as image2 format 2022-04-23 19:51:46 +02:00
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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.