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Martin Vignali 1425114af2 avcodec/prores_ks : do not call estimate_alpha at each quantification step 
also remove unused arg in estimate_alpha_plane

Improve quality of Prores 4444 encoding
2018-04-05 22:06:30 +02:00
compat compat: remove in-tree NVidia headers 2018-02-27 16:22:12 +01:00
doc doc/developer: update link to "sign-off" info 2018-04-05 10:00:42 -08:00
ffbuild Merge commit '17b6c7efb471e8ff1b8a7271f6531ba1d52bf69c' 2017-11-12 01:02:02 -03:00
fftools ffmpeg: allow setting attached_pic disposition 2018-04-04 19:09:28 +02:00
libavcodec avcodec/prores_ks : do not call estimate_alpha at each quantification step 2018-04-05 22:06:30 +02:00
libavdevice avdevice/decklink_dec: use av_packet_make_refcounted to ensure packets are ref counted 2018-04-02 00:36:24 -03:00
libavfilter avfilter/x86/vf_blend : add SIMD for 16 bit version of 2018-04-05 21:46:16 +02:00
libavformat avformat/mov: Fix parsing of tfdt when using sample descriptors. 2018-04-05 20:10:24 +02:00
libavresample avresample: remove deprecated attribute from the AVAudioResampleContext struct 2018-01-09 10:56:53 -03:00
libavutil avutil/pixdesc: deprecate AV_PIX_FMT_FLAG_PSEUDOPAL 2018-04-03 17:53:00 +02:00
libpostproc postproc: Drop deprecated qp typedef 2017-10-22 00:35:23 -03:00
libswresample swresample/rematrix: fix update of channel matrix if input or output layout is undefined 2018-02-19 08:32:25 +01:00
libswscale avutil/pixdesc: deprecate AV_PIX_FMT_FLAG_PSEUDOPAL 2018-04-03 17:53:00 +02:00
presets presets: remove moldering iPod presets 2014-06-17 16:15:04 -08:00
tests checkasm/vf_blend : add test for 16 bit version of 2018-04-05 21:46:19 +02:00
tools lav*,tests: remove several register_all calls 2018-04-02 03:26:22 +01:00
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MAINTAINERS MAINTAINERS: add myself to mediacodec 2018-03-06 13:54:35 -08:00
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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.