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

["Jose Rey" <Jose.Rey at eu.panasonic.com>]

Colin, Magnus,

[snip]
> > Packet 0: Type 1: SIDX=1
> >
> > Packet 1: Type 5: SIDX=2
> >           Type 1: SIDX=2
> >
> > Packet 2: Type 1: SIDX=2
> >
> > Packet 3: Type 5: SIDX=2 (Repetition)
> >           Type 1: SIDX=2
> >
> > IF you in the above case would loose packet 1, you can only utilize 
> > packet 2 if you get packet 3 and its SD.
> 
> This is the behaviour in the -09 draft, yes.
> 
> > With the proposed timestamp model, the timestamp of the 
> TYPE 5 unit in 
> > packet 3 should have a TS equal to the TS of packet 1, 
> rather than the 
> > TS of packet 3 to indicate that it is useful from the TS time of 
> > packet 1.
> 
> Why? If you give the type 5 unit sent in packet 3 the 
> timestamp of packet 3, then the behaviour is unchanged from 
> the previous, except that the timing model is used to decode the data.
> 
This is what -13, section 4.5 says. 

José


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