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0fc150f048
avio_close_dyn_buf() has a bug: When the write pointer does not point to the end of the written data when calling it (i.e. when one has performed a seek back to update already written data), it would not add padding to the end of the buffer, but to the current position, overwriting other data; furthermore the reported size would be wrong (off by the amount of data it has overwritten with padding). In order not to run into this when updating already written elements or elements for which size has only been reserved, the Matroska muxer would first record the current position of the dynamic buffer, then seek to the desired position, perform the update and seek back to the earlier position. But now that end_ebml_master_crc32() does not make use of avio_close_dyn_buf() any more, this is no longer necessary. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
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 a mean to alter decoded Audio and Video through chain of 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.