[xiph-rtp] Interesting post on AVT list

[Luca Barbato]

Tor-Einar Jarnbjo wrote:

> Yes, Colin was right that the 1k size limit for the SDP descriptor is
> not related to RTSP or SIP. However, SDP descriptors are usually _not_
> reliably transmitted. Embedding the codebook header in the SDP means
> that the encapsulating UDP packet will exceed the path MTU for all
> common Vorbis streams and/or network situations and you will also empose
> a length restriction on the codebook header to somewhere around 65000
> bytes. For Vorbis this might not be a great problem. What about Theora?
> So still, my objections against unreliable codebook delivery are valid.
> If we put the codebook into the SDP, we will not even have a possibility
> to transmit the codebook fragments twice, just to assume that the client
> will have received at least one of each fragment.

Lose the session description and you can't start the session.

Which method would deliver the SDP unreliably?

lu

-- 

Luca Barbato

Gentoo/linux Developer		Gentoo/PPC Operational Leader
http://dev.gentoo.org/~lu_zero