GNOME Bugzilla – Bug 365409
totem-mozilla claims RTSP mime type but can't play them
Last modified: 2006-10-26 22:05:35 UTC
That bug has been opened on https://launchpad.net/distros/ubuntu/+source/totem/+bug/66902 "In Edgy, if you go to: http://www.bbc.co.uk/radio/aod/radio2.shtml totem-mozilla will pop up a dialog informing you that it doesn't know how to play RTSP streams. Which is nice, but I don't want it to, I (ok, the user) has realplayer installed and it does know how to play RTSP. This is a regression from dapper."
IMHO you simply shouldn't ship the complex plugin (--disable-complex-plugin).
The complex plugin doesn't work with the currently released GStreamer, but does with xine-lib. GStreamer CVS has RTSP support. IMO, this is a packaging bug.