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41e3d36a39
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Haihao Xiang 41e3d36a39 lavc/vaapi_decode: Use dynamic frame pool if possible 
libva2 doesn't require a fixed surface-array any more, so we may use
dynamic frame pool for decoding when libva2 is available, which allows a
downstream element stores more frames from VAAPI decoders and fixes the
error below:

$ ffmpeg -hwaccel vaapi -hwaccel_output_format vaapi \
-i input.mp4 -c:v hevc_vaapi -f null -
...
[h264 @ 0x557a075a1400] get_buffer() failed
[h264 @ 0x557a075a1400] thread_get_buffer() failed
[h264 @ 0x557a075a1400] decode_slice_header error
[h264 @ 0x557a075a1400] no frame!

Signed-off-by: Haihao Xiang <haihao.xiang@intel.com>
2024-04-18 14:43:07 +08:00
compat
doc avformat/lc3: add file format for LC3/LC3plus transport 2024-04-15 18:34:12 +02:00
ffbuild ffbuild/libversion.sh: add shebang 2024-04-09 15:34:53 +02:00
fftools fftools/ffmpeg_filter: implement filtergraph chaining 2024-04-09 10:34:18 +02:00
libavcodec lavc/vaapi_decode: Use dynamic frame pool if possible 2024-04-18 14:43:07 +08:00
libavdevice
libavfilter avfilter/vf_colorspace: use colorspace negotiation API 2024-04-17 22:17:56 +02:00
libavformat avformat/ivfenc: remove unused var 2024-04-17 18:31:06 +05:30
libavutil avutil/frame: free the old side data buffer before replacing it 2024-04-11 12:32:13 -03:00
libpostproc
libswresample
libswscale swscale: [LA] Optimize swscale funcs in input.c 2024-04-11 23:53:59 +02:00
presets
tests avutil/frame: add a flag to allow overwritting existing entries 2024-04-11 09:18:19 -03:00
tools
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Changelog avformat/lc3: add file format for LC3/LC3plus transport 2024-04-15 18:34:12 +02:00
configure configure, etc: switch to shebang without space 2024-04-09 16:01:24 +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.