[Vorbis-dev] Mapping = 1 Ambisonic Vorbis flag

[Sampo Syreeni]

On 2008-09-12, Martin Leese wrote:

> No, the Skeleton stream comes ahead of all other streams.

Yes. A non-chained stream, but also ahead of the other ones. I haven't 
been clear enough, either: I know that Skeleton stores only the 
information that is used to seek rapidly into the composite Ogg stream. 
Still I often refer to Skeleton as if it was some sort of general 
metadata container which could help unify the semantics of the Ogg 
multiplex, across streams. My mistake; it's borne of the fact that no 
such general metadata stream exists, and perhaps even *shouldn't* exist.

> Well, the simplest mapping is to let Channel Mapping = 1 signify a 
> B-Format Vorbis stream.

Yes. But how do you then tell the receiver that, oh, there's another 
stream in the multiplex which carries the oh-so-important dialogue 
channel? You do need that capability, in the general setting, and you 
need to make it robust enough to really work, without exception.
-- 
Sampo Syreeni, aka decoy - decoy at iki.fi, http://decoy.iki.fi/front
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