a59808dd57
This introduces a new option to the mov demuxer: -use_mfra_for (pts|dts). When it's given and moofs and a MFRA are present, the MFRA's TFRAs are read for fragment start times. Unfortunately some programs that produce fragmented mp4s use the TFRA time field for dts and some for pts. There is no realistic way to detect which is the case, hence the responsibility is punted onto the user. This also means that no behavioural change is enabled by default - you must pass either dts or pts for anything to happen. Without this change, timestamps for some discontinuous fragmented mp4 are wrong, and cause audio/video desync and are not usable for generating HLS. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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 analisys 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
Conding examples are available in the doc/example directory.
License
FFmpeg codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.