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Haihao Xiang 129530e917 lavfi/vf_vpp_qsv: handle NULL pointer when evaluating an expression 
This patch provides default value if the expression is NULL.

This is in preparation for reusing the code for other QSV filters.

Signed-off-by: Haihao Xiang <haihao.xiang@intel.com>
2023-01-17 10:10:52 +08:00
compat compat/cuda: switch from powf to __powf intrinsic 2022-09-03 20:27:34 +02:00
doc avfilter: add fractional delay IR source filter 2023-01-16 09:59:31 +01:00
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fftools ffprobe: expose AVAmbientViewingEnvironment side data in AVFrames 2023-01-13 21:26:27 +02:00
libavcodec lavc/qsvenc_jpeg: accept YUYV422 and BGRA in system memory 2023-01-17 10:10:52 +08:00
libavdevice avdevice/avfoundation: convert to new channel layout-API 2022-11-08 14:08:05 -03:00
libavfilter lavfi/vf_vpp_qsv: handle NULL pointer when evaluating an expression 2023-01-17 10:10:52 +08:00
libavformat avformat/segment: calculate segment durations correctly. 2023-01-16 15:37:59 +05:30
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README.md
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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.