Re: Multi-channel labels in Vorbis comments

"[email protected]" <[email protected]> Thu, 17 Nov 2011 04:24:00 -0800

Newsgroups	gmane.comp.multimedia.ogg.vorbis.devel
Message-ID	<CAN=xSLsj5MEDHo59z3-v5dg=+24yxQCpaShDZdfjCaBw03ATrQ@mail.gmail.com>

> So each stereo Vorbis stream within the Ogg container could have a
> comment such as:
>
> STEM=Bass
>
> Is that right?

That is correct. Each logical stream will have its own independent
comments packet.
All streams do not have to have the same number of channels, by the
way. You can have a mono stream, and a stereo one, say.