[theora] multiple audio streams

[Conrad Parker]

On 19/06/07, Patrick Byrne <pbyrne at frontier.co.uk> wrote:
> I need to make an ogg-theora file with multiple audio streams.
>
> ffmpeg2theora-0.18.exe does not appear to support these.
>
> I set up a graph with 2 audio streams in graphedit, but only the theora
> stream and 1 audio stream appear in the resulting ogg file.
>
> Can someone please advise? Is there some way I can make these or some
> other tools do what I want, or am I going to have to write my own encoder?

Hi Patrick,

without writing new code, the simplest would probably be to encode the
second and subsequent audio tracks as plain Ogg Vorbis files (using
oggenc) and then merge the lot (together with the file produced by
ffmpeg2theora) with oggzmerge.

cheers,

Conrad.