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Mark Thompson 2a1542d105 lavfi/opencl: Derive global work size from plane image sizes 
Add a new function to find the global work size given the output image and
the required block alignment, then use it in the overlay, program and unsharp
filters.  Fixes the overlay and unsharp filters applying the kernel to
locations outside the frame when subsampled planes are present.
 		2018-03-22 23:12:47 +00:00
compat compat: remove in-tree NVidia headers 2018-02-27 16:22:12 +01:00
doc avfilter/avf_showvolume: add background opacity option 2018-03-22 23:08:33 +01:00
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libavcodec avcodec/extract_extradata: don't uninitialize the H2645Packet on every processed packet 2018-03-22 17:13:56 -03:00
libavdevice lavd: fix iterating of input and output devices 2018-03-18 17:45:20 +01:00
libavfilter lavfi/opencl: Derive global work size from plane image sizes 2018-03-22 23:12:47 +00:00
libavformat lavf/movenc: write track title metadata for mov files 2018-03-22 20:59:16 +02:00
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libavutil avutil/integer: move the test to the corresponding subdirectory 2018-03-20 23:27:58 -03:00
libpostproc
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libswresample swresample/rematrix: fix update of channel matrix if input or output layout is undefined 2018-02-19 08:32:25 +01:00
libswscale swscale: Introduce a helper to identify semi-planar formats 2018-03-03 15:20:19 -08:00
presets
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tests avutil/integer: move the test to the corresponding subdirectory 2018-03-20 23:27:58 -03:00
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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 a mean to alter decoded Audio and Video through chain of 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.