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Vignesh Venkatasubramanian 54c488223b avformat/movenc: Add loop parameter to animated AVIF 
The HEIF specification permits specifying the looping behavior of
animated sequences by using the EditList (elst) box. The track
duration will be set to the total duration of all the loops (or
infinite) and the duration of a single loop will be set in the edit
list box.

The default behavior is to loop infinitely.

Compliance verification:
* This was added in libavif recently [1] and the files produced by
  ffmpeg after this change have EditList boxes similar to the ones
  produced by libavif (and avifdec is able to parse the loop count as
  intended).
* ComplianceWarden is ok with the produced files.
* Chrome is able to play back the produced files.

[1] 4d2776a3af

Signed-off-by: Vignesh Venkatasubramanian <vigneshv@google.com>
Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
2023-01-13 20:03:36 +08:00
compat
doc avformat/file: add fd protocol 2023-01-11 18:50:36 +08:00
ffbuild
fftools fftools/ffmpeg_demux: prefer fd over pipe for seek support 2023-01-11 18:50:36 +08:00
libavcodec avcodec/bonk: Check ntaps against buffer size 2023-01-12 15:44:41 +01:00
libavdevice
libavfilter lavfi/graphparser: drop a redundant label 2023-01-10 11:52:02 +01:00
libavformat avformat/movenc: Add loop parameter to animated AVIF 2023-01-13 20:03:36 +08:00
libavutil avutil/hwcontext_videotoolbox: BGRA should be full range 2023-01-11 18:57:20 +08:00
libpostproc
libswresample swresample/swresample_frame: fix regression in detecting changes 2023-01-04 18:19:07 +01:00
libswscale
presets
tests avcodec/av1_parser: export timing information when present 2023-01-10 09:08:09 -03:00
tools
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Changelog avformat: Rename IPFS to IPFS gateway 2023-01-09 12:14:47 -05:00
configure avformat: Rename IPFS to IPFS gateway 2023-01-09 12:14:47 -05:00
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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.