mirror of https://git.ffmpeg.org/ffmpeg.git
This change relaxes the whitelist on reading color metadata in MOV/BMFF containers. The whitelist on writing values is still in place. As a consequence it also fixes an apparent bug in reading 'nclc' values. The 'nclc' spec [1] is in harmony with ISO 23001-8 for the values it lists, but the code getting removed was remapping 5->6 and 6->7 for primaries, which is incorrect, and was remapping 6->5 for color matrix ("colorspace" in the code), which is equivalent but an unnecessary inconsistency. This logic error doesn't appear in movenc. Removing the whitelist allows proper conversion when the source codec relies on the container for proper signaling of newer codepoints, such as DNxHR and VP9. If converting to a codec or container that has updated its spec to include the new codepoints, the metadata will be preserved. If going back to MOV/BMFF, the output whitelist will still kick in, so this won't result in out-of-spec files being created. [1] https://developer.apple.com/library/mac/technotes/tn2162/_index.html Signed-off-by: Steven Robertson <steven@strobe.cc> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> |
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compat | ||
doc | ||
libavcodec | ||
libavdevice | ||
libavfilter | ||
libavformat | ||
libavresample | ||
libavutil | ||
libpostproc | ||
libswresample | ||
libswscale | ||
presets | ||
tests | ||
tools | ||
.gitattributes | ||
.gitignore | ||
.travis.yml | ||
COPYING.GPLv2 | ||
COPYING.GPLv3 | ||
COPYING.LGPLv2.1 | ||
COPYING.LGPLv3 | ||
CREDITS | ||
Changelog | ||
INSTALL.md | ||
LICENSE.md | ||
MAINTAINERS | ||
Makefile | ||
README.md | ||
RELEASE | ||
arch.mak | ||
cmdutils.c | ||
cmdutils.h | ||
cmdutils_common_opts.h | ||
cmdutils_opencl.c | ||
common.mak | ||
configure | ||
ffmpeg.c | ||
ffmpeg.h | ||
ffmpeg_cuvid.c | ||
ffmpeg_dxva2.c | ||
ffmpeg_filter.c | ||
ffmpeg_opt.c | ||
ffmpeg_qsv.c | ||
ffmpeg_vaapi.c | ||
ffmpeg_vdpau.c | ||
ffmpeg_videotoolbox.c | ||
ffplay.c | ||
ffprobe.c | ||
ffserver.c | ||
ffserver_config.c | ||
ffserver_config.h | ||
library.mak | ||
version.sh |
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
andqt-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.