c2424b1f35
If the edit lists remove parts of the output timeline, or add a delay to it, this should be included in the mvhd/tkhd/mdhd durations, which should correspond to the edit lists. For tracks starting with pts < 0, the edit list trims out the segment before pts=0. For tracks starting with pts > 0, a delay element is added in the edit list, delaying the start of the track data. In both cases, the practical effect is that the post-edit output is as if the track had started with pts = 0. Thus calculate the range from pts=0 to end_pts, for the purposes of mvhd/tkhd/mdhd, unless edit lists explicitly are disabled. mov_write_edts_tag needs to operate on the actual pts duration of the track samples, not the duration that already takes the edit list effect into account. Signed-off-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 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.