2ff687c17f
When a Matroska Block is only stored in compressed form, the size of the uncompressed block is not explicitly coded and therefore not known before decompressing it. Therefore the demuxer uses a guess for the uncompressed size: The first guess is three times the compressed size and if this is not enough, it is repeatedly incremented by a factor of three. But when this happens with lzo, the decompression is neither resumed nor started again. Instead when av_lzo1x_decode indicates that x bytes of input data could not be decoded, because the output buffer is already full, the first (not the last) x bytes of the input buffer are resent for decoding in the next try; they overwrite already decoded data. This commit fixes this by instead restarting the decompression anew, just with a bigger buffer. This seems to be a regression since 935ec5a1. A FATE-test for this has been added. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com> Signed-off-by: James Almer <jamrial@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.