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a82a052769
The current behaviour ends up squaring the avg_frame_rate if the conter mode flag is set. This messes up the timecode calculation, and looks to me as a regression that seems to have been introduced 428b4aac. Upon further testing is seems that no special case is need for having the counter flag set. av_timecode_init appears to handles the timecode correctly, at least in the sample files I have. Here is a sample mov file with the counter flag set https://www.dropbox.com/s/5l4fucb9lhq523s/timecode_counter_mode.mov before the patch ffmpeg will report the timecode as: 00:37:11:97 and warns that the timecode framerate is 576000000/1002001 after patch: 14:50:55:02 Signed-off-by: Anton Khirnov <anton@khirnov.net>
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.