oggz-merge merges Ogg files together, 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
Run oggz-known-codecs(1) for a full list
of codecs known by the installed version of oggz.
For example, if you have an Ogg Theora video file, and its soundtrack
stored separately as an Ogg Speex audio file, and you can use
oggz-merge to create a single Ogg file containing
the video and audio, interleaved together in parallel.
Similarly, using oggz-merge on a collection of Ogg
Vorbis audio files will create a big Ogg file with all the songs in
parallel, ie. interleaved for simultaneous playback. Such a file is
proper Ogg, but not "Ogg Vorbis I" -- the Ogg Vorbis I specification
defines an Ogg Vorbis file as an Ogg file containing only one Vorbis
track at a time (ie. no parallel multiplexing). Many music players
(which use libvorbisfile) arent designed to play multitrack Ogg files.
In general however, video players, and anything built on a multimedia
framework (like GStreamer, DirectShow etc.) will probably be able to
handle such files.
If you want to create a file containing some Ogg files sequenced one
after another, then you should simply concatenate them together using
cat. In Ogg this is called "chaining". If you cat
Ogg Vorbis I audio files together, then the result will also be a
compliant Ogg Vorbis file.