[theora-dev] Re: Ogg IETF standard (was: Re: [vorbis-dev]application/ogg statusupdate)

Silvia.Pfeiffer at csiro.au Silvia.Pfeiffer at csiro.au
Tue Nov 19 16:43:32 PST 2002

Michael Smith wrote:
> At 04:03 PM 19/11/2002 +1100, Silvia.Pfeiffer at csiro.au wrote:
> >Hmm, I know what you mean. I've actually taken these sentences out of
> >Monty's specifications. The first one refers to the page size of max.
> >~64 kByte and the second one to the logical subdivision of packets into
> >segments of 255 Byte size. I'm not sure how to rephrase that properly
> >though. Maybe it's good as it stands: that it is recommended to have 4-8
> >kByte size, but expected more commonly to be 50-200 Byte? I'm not
> >experienced enough to make anyone of these statements. Monty, your take?
> >
> Ogg is designed for an nominal page size of 4-8 kB (libogg will use
> pages of just over 4 kB usually), so the 4-8 kB figure refers to
> nominal _page_ size. For latency reasons, constraining this to a
> reasonably low figure (rather than the 64 kB maximum, or close to that)
> is reasonably important, so this should stay (after being corrected,
> of course).
> The packet size figure as given (50-200 bytes) is also correct, but not
> as important, since this is a design justification rather than a
> recommendation for usage.

Hmm, so is the recommendation to use 4-8 kB packets, but the usually
expected case 50-200 bytes?

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