You've already forked FFmpeg
mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2025-08-10 06:10:52 +02:00
d2096679d5
pthread_t is currently defined as a struct, which gets placed into caller's memory and filled by pthread_create() (which accepts a pthread_t*). The problem with this approach is that pthread_join() accepts pthread_t itself rather than a pointer to it, so it gets a _copy_ of this structure. This causes non-deterministic failures of pthread_join() to produce the correct return value - depending on whether the thread already finished before pthread_join() is called (and thus the copy contains the correct value), or not (then it contains 0). Change the definition of pthread_t into a pointer to a struct, that gets malloced by pthread_create() and freed by pthread_join(). Fixes random failures of fate-ffmpeg-error-rate-fail on Windows after433cf391f5. See also [1] for an alternative approach that does not require dynamic allocation, but relies on an assumption that the pthread_t value remains in a fixed memory location. [1]23829dd2b2Reviewed-By: Martin Storsjö <martin@martin.st>
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.