[vorbis] Vorbis Comment question

[Nemo - earth native]

On Thu, Mar 06, 2003 at 03:43:24PM +1300, John Morton did utter:
> > I had the impression that the Holy Metadata Format would allow such
> > things as lyrics/subtitles, etc (as in, show the metadata stream in
> > sync with the data) or some such.  There is probably only a slight
> > demand for that at the moment, but it's a case where tags fall short.
> 
> Would it? Or would it be in it's own stream interleaved with the audio and 
> video? How does the .vobs in DVDs do this stuff now? Is anyone developing 
> something similar for Theora?

DVD subtitles are merely images (RLE encoded I believe) that are decoded
and overlaid on the video stream. 

I recall hearing that theora would use the same basic idea, though by
implementing .mng as the image format in use.

(this information gleaned from my memory, placed there via months-old
googling. this is the disclaimer to that effect :)

.../nemo


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