[Theora] help - Theora/Vorbis/Ogg, ogmmerge and ffmpeg2theora

David Kuehling dvdkhlng at gmx.de
Tue Dec 14 05:44:26 PST 2004

>>>>> "Ian" == Ian Kirk <blob at blob.co.uk> writes:

>   # ogmmerge -v -o test.ogg vts_01.m2a.ogg vts_01.m2v.ogg Using
> OGG/OGM demultiplexer for vts_01.m2a.ogg.  +-> Using Vorbis audio
> output module for stream 1.  Using OGG/OGM demultiplexer for
> vts_01.m2v.ogg.  0.000000 (timestamp) written header page for
> vts_01.m2a.ogg Error: the reader for vts_01.m2v.ogg did not produce a
> header page.

AFAIK ogmmerge cannot produce Theora files.  The OGM-encapsulation is
pre-theora and works completely different (something based upon windows
direct-show stuff?).

> Assuming I've encoded the two streams/files correctly, how can I mux
> them together to have a Vorbis/Theora Ogg file ?

I'm quite sure that this is currently impossible.  You should create a
video/audio MPEG-Stream which you can in turn feed into ffmpeg2theora.

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