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Ronald S. Bultje be885da342 vp9: change order of operations in adapt_prob(). 
This is intended to workaround bug "665 Integer Divide Instruction May
Cause Unpredictable Behavior" on some early AMD CPUs, which causes a
div-by-zero in this codepath, such as reported in Mozilla bug #1293996.

Note that this isn't guaranteed to fix the bug, since a compiler is free
to reorder instructions that don't depend on each other. However, it
appears to fix the bug in Firefox, and a similar patch was applied to
libvpx also (see Chrome bug #599899).
2016-10-24 16:02:39 -04:00
compat compat/cuda: convert to unix line endings 2016-09-23 11:43:00 +02:00
doc lavf: add AV_DISPOSITION_TIMED_THUMBNAILS 2016-10-24 05:47:05 -05:00
libavcodec vp9: change order of operations in adapt_prob(). 2016-10-24 16:02:39 -04:00
libavdevice lavd/decklink_dec: fix indentation 2016-10-21 20:24:12 +02:00
libavfilter lavfi: remove 2 unused lavc includes 2016-10-23 20:19:28 +02:00
libavformat lavf/mov: reindent 2016-10-24 05:47:10 -05:00
libavresample doxygen: Standardize root-level modules 2016-08-02 22:15:25 -07:00
libavutil avutil/x86/emms: Document the emms_c() vs alloc/free relation. 2016-10-23 13:02:37 +02:00
libpostproc doxygen: Standardize root-level modules 2016-08-02 22:15:25 -07:00
libswresample swresample/resample: fix return value of build_filter 2016-10-18 22:36:01 +07:00
libswscale swscale: fix for sliced scaling artifacts 2016-09-16 11:25:28 -03:00
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ffmpeg_cuvid.c doc: fix spelling errors 2016-10-21 23:58:47 +02:00
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ffmpeg_qsv.c ffmpeg/qsv: fix QSV-accelerated transcode performance drop issue. 2016-08-16 17:09:33 +02:00
ffmpeg_vaapi.c ffmpeg_vaapi: fix choice of decoder_format 2016-09-29 01:23:52 +02:00
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RELEASE
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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.
  • ffserver is a multimedia streaming server for live broadcasts.
  • 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.