174ca11d91
According to MXF specs the Stored Rectangle corresponds to the data which is passed to the compressor and received from the decompressor, so they should contain the width / height extended to the macroblock boundary. In practice however width and height values rounded to the upper 16 multiples are only seen when muxing MPEG formats. Therefore this patch changes stored width and height values to unrounded for all non-MPEG formats, even macroblock based ones. For DNXHD the specs (ST 2019-4) explicitly indicates to use 1080 for 1088p. For ProRes the specs (RDD 44) only refer to to ST 377-1 without precision but no known commercial implementations are using rounded values. DV is not using 16x16 macroblocks, so 16 rounding makes no sense. The patch also fixes Sampled Width / Display Width to use unrounded values. Signed-off-by: Marton Balint <cus@passwd.hu>
FFmpeg README
FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.
Libraries
libavcodecprovides implementation of a wider range of codecs.libavformatimplements streaming protocols, container formats and basic I/O access.libavutilincludes hashers, decompressors and miscellaneous utility functions.libavfilterprovides means to alter decoded audio and video through a directed graph of connected filters.libavdeviceprovides an abstraction to access capture and playback devices.libswresampleimplements audio mixing and resampling routines.libswscaleimplements 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,ismindexandqt-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.