oggz-sort — Sort the pages of an Ogg file in order of presentation time.
| --output filename
[-h | --help ] [-v | --version ]
sorts an Ogg file, interleaving pages in order of presentation
time. It correctly interprets the granulepos timestamps of Ogg CELT, CMML,
Dirac, FLAC, Kate, PCM, Speex, Theora and Vorbis bitstreams. Run
for a full list of codecs known by the
installed version of oggz.
Some encoders produce files with incorrect page ordering; for example, some
audio and video pages may occur out of order. Although these files are usually
playable, it can be difficult to accurately seek or scrub on them, increasing
the likelihood of glitches during playback. Players may also need to use more
memory in order to buffer the audio and video data for synchronized playback,
which can be a problem when the files are viewed on low-memory devices.
Some older Ogg encoders also produce pages which incorrectly have granulepos
timestamps recorded that shouldn't be: pages which have no completed packets
must have a granulepos of -1. oggz-sort
will correct such granulepos
during the process of sorting.
The tool oggz-validate
can be used to check the relative ordering of
packets in a file, and also to detect incorrect granulepos on pages with no
completed packets. If either of these errors are reported, or use
to fix the problem.
accepts the following options:
- -o filename, --output filename
- Write output to the specified filename instead of printing it to
- -h, --help
- Display usage information and exit.
- -v, --version
- Output version information and exit.
Correct the page ordering in broken.ogv:
oggz sort -o fixed.ogv broken.ogv
Conrad Parker January 25, 2008;
Copyright © 2008 Annodex Association