[xiph-rtp] Re: new RTP development list

Tor-Einar Jarnbjo Tor-Einar at Jarnbjo.de
Thu Oct 21 02:02:25 PDT 2004


Torsdag, 21 oktober 2004, skrev "illiminable" <ogg at illiminable.com>:

>There's no gaurantee that those few promo packets will arrive before 
song 
>2's start packets is there ? And since they are not time continuous,
you 
>have no way to know they are out of order. So potentially... you 
could see 
>song 2's packet... start up a new chain... then recieve the promo 
packets, 
>think it's a new chain... then get more song 2 packets and be totally 
>confused about what order you should be playing things in.
>
>Or do i not fully nuderstand how it works ?

You're more or less right, but streaming Vorbis over RTP means replacing 
the Ogg conatiner with the RTP header, and with chained Vorbis streams,
calculating the RTP timestamps would have to be done using a more 
complex mechanism than simply copying the granulepos fields from 
the Ogg pages. It would not work to allow the RTP timestamps to skip 
back and forth in time.

Tor






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