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wm4 e3af49b14b AVFrame: add an opaque_ref field 
This is an extended version of the AVFrame.opaque field, which can be
used to attach arbitrary user information to an AVFrame.

The usefulness of the opaque field is rather limited, because it can
store only up to 32 bits of information (or 64 bit on 64 bit systems).
It's not possible to set this field to a memory allocation, because
there is no way to deallocate it correctly.

The opaque_ref field circumvents this by letting the user set an
AVBuffer, which makes the user data refcounted.

Signed-off-by: Anton Khirnov <anton@khirnov.net>

Merges Libav commit 04f3bd3496.
2017-02-13 08:01:20 +01:00
compat compat/atomics: rename header guards 2016-12-02 20:08:54 -03:00
doc AVFrame: add an opaque_ref field 2017-02-13 08:01:20 +01:00
libavcodec lavc/libzvbi: remove deprecated API usage 2017-02-12 21:37:23 +00:00
libavdevice Merge commit '5d0f85f1b2469b60d0838330aabe5353fdd9ef1d' 2017-01-31 17:27:46 +01:00
libavfilter lavfi/minterpolate: Remove an unused variable. 2017-02-11 16:38:56 +01:00
libavformat avformat/hlsenc: fix stream level metadata handling 2017-02-13 07:33:48 +08:00
libavresample Bump minor versions after 3.2 branchpoint to seperate release 2016-10-26 20:52:42 +02:00
libavutil AVFrame: add an opaque_ref field 2017-02-13 08:01:20 +01:00
libpostproc Bump minor versions after 3.2 branchpoint to seperate release 2016-10-26 20:52:42 +02:00
libswresample swresample/arm: cosmetic fixes 2017-01-13 21:24:25 +01:00
libswscale swscale: add P016 input support 2017-02-01 14:29:11 -08:00
presets presets: remove moldering iPod presets 2014-06-17 16:15:04 -08:00
tests fate: add WavPack muxer test 2017-02-10 23:52:16 -03:00
tools tools/target_dec_fuzzer: Only audio uses the return value to decode packets in pieces, correct the code to match that 2017-01-31 23:43:41 +01:00
.gitattributes fate: add SCC test 2017-01-27 17:06:42 +01:00
.gitignore Merge commit '6641819feedb086ebba3d2be89b8d33980f367e1' 2016-06-26 15:43:05 +02:00
.travis.yml Merge commit 'eda183287489b2c705843aa373a19c4e46fb2fec' 2015-11-22 17:12:24 +00:00
arch.mak mips: rename mipsdspr1 to mipsdsp 2015-12-04 02:35:42 +01:00
Changelog avcodec: add FM Screen Capture Codec decoder 2017-02-12 10:43:45 +01:00
cmdutils_common_opts.h cmdutils: add show_demuxers and show_muxers 2016-11-08 01:56:31 +01:00
cmdutils_opencl.c cmdutils_opencl: fix resource_leak cid 1396852 2017-01-13 07:54:49 +08:00
cmdutils.c cmdutils: remove duplicate windows.h include 2016-11-16 15:06:16 +01:00
cmdutils.h cmdutils: add show_demuxers and show_muxers 2016-11-08 01:56:31 +01:00
common.mak Merge commit 'c5fd4b50610f62cbb3baa4f4108139363128dea1' 2016-06-27 19:39:46 +02:00
configure vaapi_encode: Add VP8 support 2017-02-08 19:14:05 +00:00
CONTRIBUTING.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
ffmpeg_cuvid.c ffmpeg_cuvid: add 420 10-bit transcode support for hwaccel cuvid 2017-02-01 14:55:39 +01:00
ffmpeg_dxva2.c Merge commit '18c506e9e6e8df8b1d496d093077b8240ea68c28' 2016-06-26 15:34:01 +02:00
ffmpeg_filter.c ffmpeg: use buffersink accessors. 2017-01-12 14:06:16 +01:00
ffmpeg_opt.c ffmpeg.c: Add output file index and stream index to vstats file. 2017-01-27 22:16:37 +01:00
ffmpeg_qsv.c ffmpeg: Add an option "qsv_device" to choose proper node for QSV child device (vaapi or dxva2) 2017-01-11 20:21:09 +00:00
ffmpeg_vaapi.c ffmpeg_vaapi: Always set hwaccel_ctx, so it gets properly cleaned up on error 2017-02-05 15:13:15 +00:00
ffmpeg_vdpau.c Merge commit 'f72db3f2f3a8c83a4f5dede8fa03434b2bf676c6' 2016-06-26 15:29:39 +02:00
ffmpeg_videotoolbox.c ffmpeg/videotoolbox: protect UTGetOSTypeFromString on both VDA and VT 2015-10-15 10:22:31 +02:00
ffmpeg.c ffmpeg: Remove redundant null check 2017-02-06 01:01:33 +01:00
ffmpeg.h ffmpeg_opt.c: Introduce a -vstats_version option and document the existing -vstats format. 2017-01-25 22:03:10 +01:00
ffplay.c ffplay: change keyboard volume control to logarithmic 2017-02-08 22:36:42 +01:00
ffprobe.c lavc: Add spherical packet side data API 2016-12-07 14:40:06 -05:00
ffserver_config.c ffserver_config: Check for failure to allocate FFServerIPAddressACL 2016-12-22 19:23:08 +01:00
ffserver_config.h ffsrever: Make the status page bitexact if any stream is bitexact 2016-11-29 19:26:26 +01:00
ffserver.c ffserver: local OOB write with custom program name 2017-01-08 03:50:56 +01:00
INSTALL.md
library.mak Merge commit 'c5fd4b50610f62cbb3baa4f4108139363128dea1' 2016-06-27 19:39:46 +02:00
LICENSE.md lavfi/f_ebur128: relicense to LGPL 2016-11-27 20:46:20 +01:00
MAINTAINERS MAINTAINERS: Add myself for boadec.c 2017-01-31 18:41:49 +01:00
Makefile Merge commit '6641819feedb086ebba3d2be89b8d33980f367e1' 2016-06-26 15:43:05 +02:00
README.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
RELEASE RELEASE: Update for past 3.2 branch 2016-10-26 20:52:43 +02:00
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 and will be ignored.