[ogg-dev] Fwd: Skeleton 4.0 draft, help with Dirac fields please!

[Monty Montgomery]

> However, looking at David's most recent draft* the current scheme is
> more complicated than that, with the three parts split into four
> pieces to achieve better compatibility with muxers which only know the
> theora scheme. In any case, everything is fixed width, so we can just
> record the fixed 'granule shift' of 22 bits in the current skeleton
> field and things will be fine as far as Dirac goes.
>
> The question then becomes how well the Dirac mapping would work for
> other reordering codecs, and whether we want to add two (or three!)
> additional granulepos interpretation fields to the fishbone spec in
> case other codecs want to make different resolution tradeoffs.

I think we should stop retconning and finally set rules--- if we're
going to declare the granpos parameters in the header, then we have to
take away the infinitely flexible mappings.

Monty