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Clément Bœsch b0352b1997 avcodec: export motion vectors in frame side data on demand 
The reasoning behind this addition is that various third party
applications are interested in getting some motion information out of a
video "for free" when it is available.

It was considered to export other information as well (such as the intra
information about the block, or the quantization) but the structure
might have ended up into a half full-generic, half full of codec
specific cruft. If more information is necessary, it should either be
added in the "flags" field of the AVMotionVector structure, or in
another side-data.

This commit also includes an example exporting them in a CSV stream.
2014-08-18 14:13:57 +02:00
compat Merge commit 'f929ab0569ff31ed5a59b0b0adb7ce09df3fca39' 2014-08-15 21:00:50 +02:00
doc avcodec: export motion vectors in frame side data on demand 2014-08-18 14:13:57 +02:00
libavcodec avcodec: export motion vectors in frame side data on demand 2014-08-18 14:13:57 +02:00
libavdevice avdevice/v4l2: try to fix build for openbsd 2014-08-18 14:03:03 +02:00
libavfilter vidstabutils: fix indentation 2014-08-17 11:28:23 +02:00
libavformat wvdec: check for eof in wv_read_block_header() 2014-08-18 11:30:35 +00:00
libavresample Merge commit '11db644a8e54f02e54d2eaad343a87fcb697c15e' 2014-08-17 21:43:06 +02:00
libavutil avcodec: export motion vectors in frame side data on demand 2014-08-18 14:13:57 +02:00
libpostproc Drop remaining unneeded != NULL 2014-08-15 22:47:45 +02:00
libswresample swresample: Add AVFrame based API 2014-08-16 20:39:37 +02:00
libswscale lsws: duplicate ff_log2_tab 2014-08-12 20:52:21 +02:00
presets presets: remove moldering iPod presets 2014-06-17 16:15:04 -08:00
tests Merge commit '4b1f5e5090abed6c618c8ba380cd7d28d140f867' 2014-08-15 21:26:12 +02:00
tools Merge commit '4b1f5e5090abed6c618c8ba380cd7d28d140f867' 2014-08-15 21:26:12 +02:00
.gitignore avcodec: export motion vectors in frame side data on demand 2014-08-18 14:13:57 +02:00
arch.mak
Changelog Merge commit '481a3667495425db9fdffb653292b6460fb68208' 2014-08-14 00:41:21 +02:00
cmdutils_common_opts.h ffmpeg: add -devices param 2014-05-28 03:52:50 +02:00
cmdutils_opencl.c cmdutils_opencl: Use av_malloc_array() 2014-07-01 03:49:36 +02:00
cmdutils.c Drop remaining unneeded != NULL 2014-08-15 22:47:45 +02:00
cmdutils.h ffmpeg: add -devices param 2014-05-28 03:52:50 +02:00
common.mak Merge commit 'afe176265480880e1f702c96a8ba434b0d88728b' 2014-05-20 03:33:30 +02:00
configure avcodec: export motion vectors in frame side data on demand 2014-08-18 14:13:57 +02:00
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CREDITS
ffmpeg_dxva2.c
ffmpeg_filter.c ffmpeg_filter: refuse to configure input without a decoder. 2014-07-30 14:40:45 +02:00
ffmpeg_opt.c Use new av_dict_set_int helper function. 2014-08-16 14:31:41 +02:00
ffmpeg_vda.c
ffmpeg_vdpau.c
ffmpeg.c Drop remaining unneeded != NULL 2014-08-15 22:47:45 +02:00
ffmpeg.h ffmpeg: remove 32 channel limit from audio_channels_map 2014-08-15 05:38:47 +02:00
ffplay.c Use new av_dict_set_int helper function. 2014-08-16 14:31:41 +02:00
ffprobe.c ffprobe: add -show_data_hash option. 2014-08-17 11:30:55 +02:00
ffserver.c ffserver: warn if config uses a system port 2014-08-17 22:51:45 -04:00
INSTALL.md INSTALL: add markdown syntax 2014-05-28 22:38:38 +02:00
library.mak Merge commit 'bb0babd7054bed7edfd9f4d6b20cdba864de1830' 2014-07-22 02:45:45 +02:00
LICENSE.md lavc/flacenc: add sse4 version of the 16-bit lpc encoder 2014-08-13 01:14:47 +02:00
MAINTAINERS avfilter: ported lenscorrection filter from frei0r 2014-08-12 03:33:30 +02:00
Makefile Merge commit 'd45ebd4876ab8fc07736a644de07e1b1d11a8e5d' 2014-07-22 03:06:43 +02:00
README.md Merge commit '96ce6d6f119a16e489941c629a2805204322b717' 2014-08-17 21:41:55 +02:00
RELEASE Prepare for 11_alpha2 Release 2014-08-10 10:07:55 -04:00
RELEASE_NOTES reset and complete RELEASE_NOTES for the next version 2014-08-13 21:03:55 +02:00
version.sh version.sh: Print versions based on the last git tag for release branches 2014-07-28 15:44:59 +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 analisys 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

Conding examples are available in the doc/example directory.

License

FFmpeg codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.