[theora-dev] More Missing Pieces
dan at on2.com
Mon Feb 24 12:26:59 PST 2003
> From: Mike Melanson [mailto:melanson at pcisys.net]
> Will the token tables be transported as frequency
> histograms as is
> done in the current source? That means:
> 80 tables * 32 freqs/table * 2 bytes/freq = 5120 bytes
yes, that's how it's being done. If it isn't checked in, I can send the patch to you.
> Okay, I guess I see where you're coming from. If someone were
> to try to
> encapsulate this data in an AVI, ASF, or MOV file (just in case Ogg
> adoption doesn't take off right away), I guess it would need
> to go inside
> the video header?
umm, that's a good question. I guess it's the same problem as with Vorbis; I hadn't really thought about this. I think all these formats have some sort of codec-specific stream header data, don't they?
> > I suppose we could put in a "VP3-compat" flag, but it
> seemed easier to just shove the VP3 tables in if you want
> them -- among other things, you could remove these tables
> from the binaries.
> But there is still the minor issue of compatibility with VP3
> streams which necessitates the inclusion of the classic tables.
Only if you want a binary that does both. The cases I'm envisioning would be embedded apps where that probably wouldn't be an issue.
> -Mike Melanson
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