[MDDSD]

I'm trying to play a rtsp stream in my add-on using python and the xbmc api.
Unfortunately XBMC keeps saying that the stream cannot be played although there's no problem playing the same stream in VLC.
I've also tried creating a .strm-file with the url to the rtsp stream an tried browsing for it through XBMC but I get a message saying that the stream could not be played.

I have my own python class that implements the XBMC videoplayer.
I should also mention that playing a http stream is working fine but rtsp does not.

Here's some info from the xbmc.log file:
Some of the info in the log is from me logging what's happening.

10:03:54 T:7832 NOTICE: play_url: rtsp://htpc2:8082/test
10:03:54 T:7832 NOTICE: Sleeping...
10:03:54 T:6816 NOTICE: Previous line repeats 10 times.
10:03:54 T:6816 NOTICE: DVDPlayer: Opening: rtsp://htpc2:8082/test
10:03:54 T:6816 WARNING: CDVDMessageQueue(player):ut MSGQ_NOT_INITIALIZED
10:03:54 T:7832 NOTICE: Sleeping...
10:03:54 T:6260 NOTICE: Previous line repeats 1 times.
10:03:54 T:6260 NOTICE: Creating InputStream
10:03:54 T:6260 NOTICE: Creating Demuxer
10:03:54 T:7832 NOTICE: Sleeping...
10:04:02 T:6816 NOTICE: Previous line repeats 7334 times.
10:04:02 T:6816 NOTICE: Storing total System Uptime
10:04:02 T:6816 NOTICE: Saving settings
10:04:02 T:7832 NOTICE: Sleeping...
10:04:02 T:6816 NOTICE: Previous line repeats 7 times.
10:04:02 T:6816 NOTICE: stop all
10:04:02 T:6816 NOTICE: ES: Stopping event server
10:04:02 T:6816 NOTICE: stopping zeroconf publishing
10:04:02 T:7832 NOTICE: Sleeping...
10:04:03 T:6004 NOTICE: Previous line repeats 957 times.
10:04:03 T:6004 NOTICE: ES: UDP Event server stopped
10:04:03 T:7832 NOTICE: Sleeping...
10:04:03 T:6816 NOTICE: stop player
10:04:03 T:6816 NOTICE: CDVDPlayer::CloseFile()
10:04:03 T:7832 NOTICE: Sleeping...
10:04:03 T:6816 NOTICE: Previous line repeats 98 times.
10:04:03 T:6816 NOTICE: DVDPlayer: waiting for threads to exit
10:04:03 T:7832 NOTICE: Sleeping...

Any help is appreciated.