dd5c7378bb
When program_date_time flag is present, in m3u8 playlist file each segment has a corresponding EXT-X-PROGRAM-DATE-TIME value. The intial program-date-time value is the actual current time at init and each new segment increments this value by its duration. When append_list flags is also present, existing playlist parsing by hls_append_segment treats existing segments as new segments regarding the program-date-time calculation. But it should not do that, because this way all real the new segments' EXT-X-PROGRAM-DATE-TIME values will be shifted erroneously by the sum duration of existing segments. Instead it should have decremented the initial program-date-time value by its duration. This would ensure that the first new segment's program-date-time value had the current time as it is expected. This patch corrects this behaviour and prevent existing segments to increment the value of initial_prog_date_time variable but decrements it. Reviewed-by: Steven Liu <lq@onvideo.cn> Signed-off-by: Bela Bodecs <bodecsb@vivanet.hu>
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.