RE: [AVT] Update (-09) of Timed Tex draft (WAS: RE:Commentsondraft-ietf-avt-rtp-3gpp-timed-text-08.txt)

[Dave Singer <singer at apple.com>]

Title: RE: [AVT] Update (-09) of Timed Tex draft (WAS: RE:Commen

At 12:54 PM +0200 4/15/05, Jose Rey wrote:

> Jan,
> > Jose,
> >
> > > I.e., it cannot be that SDs be just discarded
> > once they are used.
> >
> > Right, but in my view they are stored in an SIDX
> > buffer until they are invalidated; when that is is not relevant. Or do
> > I miss something ?  
> > And
> > where is the SD (not SIDX) buffer? What I want to say is
> > (cf. answer to Dave) that dynamic SDs (and SIDX) are first
> > introduced by this payload format and therefore codecs that use
> > them have to implement the dynamic SIDX wrap-up algo to know how
> > long to buffer SDs (at codec level).  This sounds a bit strange:
> > a payload format setting requirement on a codec and that's why I am a
> > bit doubtful this be OK(?) or am I missing something
> > ??
> >  
> > Cheers,
> > José

it's fine.  packet loss introduces requirements on the codec too.

--

David Singer
Apple Computer/QuickTime

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