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Martin Mirchev
332df18e67
mov_read_mfra() calls read_tfra() until it returns non-zero, and read_tfra() ends by seeking to the box start plus its declared size. A tfra box with size 0 therefore seeks back onto itself and is parsed again forever. Since the whole box stays in the AVIOContext buffer, no read reaches the protocol layer and the interrupt callback is never checked, so the demuxer cannot be interrupted either. The mfra is read on the first moof when use_mfra_for is enabled, which an "Anevia" free box does by default, so a 76-byte file can make avformat_open_input() spin indefinitely. Signed-off-by: Martin Mirchev <mmirchev@comp.nus.edu.sg>
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 Forgejo or 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.
See https://ffmpeg.org/developer.html for more information.