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889a022cce
Current code tracks min/max pts for each stream separately; then when the file ends it combines them with last frame's duration to compute the total duration of each stream; finally it selects the longest of those durations as the file duration. This is incorrect - the total file duration is the largest timestamp difference between any frames, regardless of the stream. Also change the way the last frame information is reported from decoders to the muxer - previously it would be just the last frame's duration, now the end timestamp is sent, which is simpler. Changes the result of the fate-ffmpeg-streamloop-transcode-av test, where the timestamps are shifted slightly forward. Note that the matroska demuxer does not return the first audio packet after seeking (due to buggy interaction betwen the generic code and the demuxer), so there is a gap in audio.
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.