You've already forked FFmpeg
mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2025-08-10 06:10:52 +02:00
133ddd3875
mov_read_ctts ignores ctts entries having count <= 0. Generally, the aggregate of all ctts entries' count fields resulting from mov_read_ctts can be less than the corresponding sample_count. mov_build_index attempts to normalize any existing ctts_data counts to be 1, to make a 1-1 mapping of a ctts_data entry to a sample. That 1-1 mapping left a tail of uninitialized ctts_data entries when the aggregate, normalized ctts_count < sample_count. Even more generally, later usage of ctts_data may depend on the entire ctts_allocated_size having been initialized. This change memsets the entire allocation of the normalized ctts_data in mov_build_index, to prevent use of uninitialized data later. BUG=816787 Change-Id: I7fd7db255e3aeed076ee32c90cb2df211741c052 Reviewed-on: https://chromium-review.googlesource.com/947110 Reviewed-by: Xiaohan Wang <xhwang@chromium.org> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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.