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In case a SupplementalProperty node exists in an adaptationset, it is searched for a "schemeIdUri" property via xmlGetProp(). Whatever xmlGetProp() returns is then compared via av_strcasecmp() to a string literal. xmlGetProp() can return NULL, namely in case no "schemeIdUri" exists and (given that this string is allocated) presumably also on allocation failure. No check for NULL is done, so this may crash. Furthermore, the string returned by xmlGetProp() needs to be freed with xmlFree(), but this is not done either. This commit fixes both of these issues; they existed since this code has been added in10d008f0fd. This has been found while investigating ticket #9697. The continuous leaks might very well be the reason behind the observed slowdown. Reviewed-by: Steven Liu <lingjiujianke@gmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com> (cherry picked from commit14b3830b33)
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 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.