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Jan Ekström 1c7e55dd50 swresample/rematrix: handle 22.2 as a 9 channel layout 
This is as far as 22.2 follows the same channel order as
WaveFormatExtensible's channel mask (and the AV_CH_* defines).

After LFE2 the side channels would follow, but that offset of
one stops us from utilizing them without further tweaks.

This change was verified by using swresample to downmix to 5.1,
and then feeding that to WASAPI.
2020-08-18 22:47:35 +03:00
compat compat/cuda/ptx2c: remove shell loop; fix BSD sed compat 2020-06-01 22:10:41 -05:00
doc doc/encoders: Add all options for JPEG2000 encoder 2020-08-17 15:30:25 +05:30
ffbuild ffbuild: Refine MIPS handling 2020-07-23 16:30:02 +02:00
fftools fftools/ffmpeg: make specifying thread_queue_size turn on threaded input 2020-07-29 23:10:12 +02:00
libavcodec avcodec/v4l2_context: return EAGAIN to signal full buffers 2020-08-16 17:39:13 -04:00
libavdevice avdevice/xcbgrab: check return values of xcb query functions 2020-08-15 15:32:52 -04:00
libavfilter dnn_backend_tf.c: fix build issue for tensorflow backend 2020-08-14 08:59:39 +08:00
libavformat avformat/mpegts: only reset timestamps to NOPTS for DVB teletext 2020-08-18 22:29:22 +03:00
libavresample
libavutil avutil/channel_layout: add 22.2 layout 2020-08-04 00:17:56 +03:00
libpostproc Bump minor versions after branching 4.3 2020-06-08 22:49:04 +02:00
libswresample swresample/rematrix: handle 22.2 as a 9 channel layout 2020-08-18 22:47:35 +03:00
libswscale swscale: do not drop half of bits from 16bit bayer formats 2020-08-08 12:03:42 +02:00
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RELEASE RELEASE: We are after the 4.3 branch point, update for that 2020-06-10 00:20:24 +02:00

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.