marcos ashton
2f779272e0
Add a new boolean option -update_filemtime to the image2 muxer that sets each output file's modification time based on the creation_time metadata plus the frame's PTS offset. This is useful when extracting frames from dashcam or action camera footage where wall-clock timestamps should be preserved on the output files, allowing photo management tools to sort frames by capture time without post-processing. The option requires creation_time metadata to be set (via -metadata creation_time=...). If not present, a warning is logged and the option is silently disabled. When PTS is unavailable, the creation time is used as-is without frame offset. Uses utimes() on POSIX and _utime() on Windows to set file timestamps with microsecond and second precision respectively. Includes a FATE roundtrip test that writes frames with a known creation_time, reads them back using the demuxer's -ts_from_file option, and verifies the PTS values match the expected timestamps. Closes: https://code.ffmpeg.org/FFmpeg/FFmpeg/issues/22537 Signed-off-by: marcos ashton <marcosashiglesias@gmail.com>
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.