LinuxQuestions.org - Problems Receiving a Multicast stream

Through my university I've got a multicast stream that I can watch (using VPN). I try to watch it using vlc,

Code:

vlc udp://@233.121.29.1:1234

but nothing happens. When I try to double click to start it from the playlist, vlc says "main stream error: cannot pre fill buffer" so it seems like I can't connect to it properly. My router has multicast enabled, or at least it says so...

I've tried stopping iptables with

Code:

/etc/init.d/iptables stop

but that didn't help. Maybe it shouldn't either, I'm quite new to this stuff.

Is there any way I can do some debugging to figure out what's wrong?

Btw, I'm running Fedora 13