0f199f0ad0
Reported as https://trac.mplayerhq.hu/ticket/2264 but have not been able to reproduce with FFmpeg-only. I have no idea what coded_height is used for here exactly, so this might not be the best fix. Fixes the following chain of events: ff_mss12_decode_init sets coded_height while not setting height. ff_mpv_decode_init then copies coded_height into MpegEncContext height. This is then used by init_context_frame to allocate the data structures. However the wmv9rects are validated/initialized based on avctx->height, not avctx->coded_height. Thus the decode_wmv9 function will try to decode a larger video that we allocated data structures for, causing out-of-bounds writes. Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
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.
- ffserver is a multimedia streaming server for live broadcasts.
- 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. Few developers
follow pull requests so they will likely be ignored.