[xiph-rtp] Difficulties with several RTP streams for a Vorbis stream.

[Tor-Einar Jarnbjo]

Mandag, 1 november 2004, skrev Ramón García <ramon.garcia.f at gmail.com>:

>You said that if a host that is listenting to an multicast address
>only receives packets of the ports it is listenting to. Unfortunately,
>this is not correct. IP multicasting works at the IP level. Ports are
>a feature of TCP and UDP.

Yeah, I see that you're right on this one, but using separate IP-
addresses is not necessarily more than an administrative problem.
How are multicast IP addresses assigned and would it really be a 
practical problem for a broadcaster to get more IP addresses?

>It is not imposible to implement Vorbis over RTP by sending through
>several channels, but it would be very involved. Consider that every
>RTP session must be handled by instances of the same RTP processor,
>and that one RTP processor must intercept the output of another.

You've already mentioned this and it might of course be more complex 
to implement such a solution than simply reading the data from an 
http url, but the implementation effort is IMHO justified.

Tor