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Andreas Rheinhardt 3ba4f9c21e avcodec/cbs_sei: Use RefStruct API for SEI messages 
The SEI message code uses the AVBuffer API for its SEI messages
and contained buffers (like the extension buffer for HEVC
or the user data (un)registered payload buffers).

Contrary to the ordinary CBS code (where some of these
contained buffer references are actually references
to the provided AVPacket's data so that one can't replace
them with the RefStruct API), the CBS SEI code never uses
outside buffers at all and can therefore be switched entirely
to the RefStruct API. This avoids the overhead inherent
in the AVBuffer API (namely the separate allocations etc.).

Notice that the refcounting here is actually currently unused;
the refcounts are always one (or zero in case of no refcounting);
its only advantage is the flexibility provided by custom
free functions.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 		2023-10-07 22:35:14 +02:00
compat configure: Set WIN32_LEAN_AND_MEAN at configure time 2023-08-14 22:57:28 +03:00
doc avcodec/hevcdec: check for DOVI configuration record in AVCodecContext side data 2023-10-06 10:11:18 -03:00
ffbuild
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fftools fftools/ffplay: stop injecting stream side data in packets 2023-10-06 10:11:19 -03:00
libavcodec avcodec/cbs_sei: Use RefStruct API for SEI messages 2023-10-07 22:35:14 +02:00
libavdevice avformat/avformat: use the side data from AVStream.codecpar 2023-10-06 10:03:57 -03:00
libavfilter avfilter/vulkan_filter: Remove unused label 2023-10-06 12:28:45 +02:00
libavformat avformat/wavdec: w64: do not error out for broken files if data start is found 2023-10-07 11:19:54 +02:00
libavutil lavu/fixed_dsp: R-V V scalarproduct 2023-10-07 17:45:39 +03:00
libpostproc
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libswresample libswresample/swresample: avoid s16p internal transfer format 2023-09-25 21:41:35 +02:00
libswscale swscale/rgb2rgb: R-V V deinterleaveBytes 2023-10-03 22:53:20 +03:00
presets
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tests fftools/ffmpeg: stop injecting stream side data in packets 2023-10-06 10:11:19 -03:00
tools tools/target_dec_fuzzer: Adjust wmapro threshold 2023-10-03 20:09:27 +02:00
.gitattributes
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.gitignore
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.mailmap
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.travis.yml
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CONTRIBUTING.md
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COPYING.GPLv2
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COPYING.GPLv3
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COPYING.LGPLv2.1
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COPYING.LGPLv3
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CREDITS
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Changelog lavc/vaapi_encode: Add VAAPI AV1 encoder 2023-09-22 13:15:00 +08:00
INSTALL.md
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LICENSE.md
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MAINTAINERS
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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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RELEASE
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configure avcodec: Remove DCT, FFT, MDCT and RDFT 2023-10-01 02:25:09 +02:00

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.