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wm4 7fc329e2dd lavc: introduce a new decoding/encoding API with decoupled input/output 
Until now, the decoding API was restricted to outputting 0 or 1 frames
per input packet. It also enforces a somewhat rigid dataflow in general.

This new API seeks to relax these restrictions by decoupling input and
output. Instead of doing a single call on each decode step, which may
consume the packet and may produce output, the new API requires the user
to send input first, and then ask for output.

For now, there are no codecs supporting this API. The API can work with
codecs using the old API, and most code added here is to make them
interoperate. The reverse is not possible, although for audio it might.

From Libav commit 05f66706d1.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
2016-04-21 14:23:36 +02:00
compat compat/os2threads: split long lines 2016-02-14 19:17:36 +01:00
doc lavc: introduce a new decoding/encoding API with decoupled input/output 2016-04-21 14:23:36 +02:00
libavcodec lavc: introduce a new decoding/encoding API with decoupled input/output 2016-04-21 14:23:36 +02:00
libavdevice Merge commit '30e9ef21cea09fa5e880e979c9f5b39edccbb6f4' 2016-04-17 19:37:54 +01:00
libavfilter Merge commit '8a02a8031ef4f98faf5647f0e01a8922247bf748' 2016-04-18 15:34:04 +01:00
libavformat lavc: introduce a new decoding/encoding API with decoupled input/output 2016-04-21 14:23:36 +02:00
libavresample Merge commit 'cc4c24208159200b7aff5b5c313903c7f23fa345' 2016-01-02 10:13:58 +01:00
libavutil x86inc: Enable AVX emulation in additional cases 2016-04-20 19:16:22 +02:00
libpostproc postproc: fix unaligned access 2016-02-23 15:50:28 +01:00
libswresample swresample/swresample: Remove "less than" comparissions of enums 2016-03-22 14:20:12 +01:00
libswscale swscale/arm: add yuv2planeX_8_neon 2016-04-11 18:13:36 +02:00
presets presets: remove moldering iPod presets 2014-06-17 16:15:04 -08:00
tests fate: add readvitc filter test 2016-04-20 18:08:17 +02:00
tools fix some a/an typos 2016-03-28 14:13:17 -08:00
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Changelog Merge commit '8a02a8031ef4f98faf5647f0e01a8922247bf748' 2016-04-18 15:34:04 +01:00
cmdutils_common_opts.h opts: add list device sources/sinks options 2014-10-25 20:20:31 +02:00
cmdutils_opencl.c all: use FFDIFFSIGN to resolve possible undefined behavior in comparators 2015-11-03 16:28:30 -05:00
cmdutils.c avconv: switch to the new BSF API 2016-03-20 08:15:01 +01:00
cmdutils.h fate/source: Do not use GNU extensions in sed 2016-02-13 07:59:00 -08:00
common.mak build: use a link instead of changing current directory when compiling 2016-01-25 20:43:34 +01:00
configure Merge commit '8a02a8031ef4f98faf5647f0e01a8922247bf748' 2016-04-18 15:34:04 +01:00
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS CREDITS: redirect to Git log, remove current outdated content 2013-01-31 18:02:52 +01:00
ffmpeg_dxva2.c ffmpeg_dxva2: add a profile check for hevc 2016-02-15 12:34:19 +01:00
ffmpeg_filter.c fix some a/an typos 2016-03-28 14:13:17 -08:00
ffmpeg_opt.c ffmpeg: remove hardcoded 'now' creation_time support 2016-03-03 01:37:22 +01:00
ffmpeg_qsv.c Merge commit 'fb472e1a11a4e0caed2c3c91da01ea8e35d9e3f8' 2015-10-22 16:18:02 +02:00
ffmpeg_vdpau.c ffmpeg_vdpau: Free ctx on error path 2016-03-03 16:41:11 +01:00
ffmpeg_videotoolbox.c ffmpeg/videotoolbox: protect UTGetOSTypeFromString on both VDA and VT 2015-10-15 10:22:31 +02:00
ffmpeg.c Merge commit '9200514ad8717c63f82101dc394f4378854325bf' 2016-04-10 20:59:55 +01:00
ffmpeg.h Merge commit 'bd49be885e9ad6bae599c54473ba2fa2957eb140' 2016-02-17 16:47:05 +00:00
ffplay.c ffplay: convert to codecpar 2016-04-12 23:41:15 +02:00
ffprobe.c ffprobe: Don't try and decode things that have no dec_ctx 2016-04-12 17:24:07 +01:00
ffserver_config.c ffserver: NoVideo and NoAudio flags weren't cleared between streams. 2016-02-21 22:29:15 +01:00
ffserver_config.h ffserver: Use singlejpeg muxer for jpeg 2015-06-08 03:36:22 +02:00
ffserver.c Merge commit '9200514ad8717c63f82101dc394f4378854325bf' 2016-04-10 20:59:55 +01:00
INSTALL.md INSTALL: add markdown syntax 2014-05-28 22:38:38 +02:00
library.mak build: use a link instead of changing current directory when compiling 2016-01-25 20:43:34 +01:00
LICENSE.md LICENSE: Thorough editing 2016-02-28 08:19:44 -08:00
MAINTAINERS avfilter: add readvitc filter 2016-04-16 16:22:43 +02:00
Makefile fate: add audiomatch 2016-03-22 09:42:05 +01:00
README.md README: replace http with https 2015-10-06 13:27:29 +02:00
RELEASE RELEASE: Update to 3.0.git 2016-02-15 10:20:33 -08:00
version.sh version.sh: Fix spurious rebuilds. 2016-03-10 09:53:10 +01:00

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.
  • 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. Few developers follow pull requests so they will likely be ignored.