RTSP Stream - Local Video Error

Hello,
i tried to display an RTSP Stream in my layout.
The stream comes from an Octopus NET SX8 Sat Streaming Server.

I get this error on the Android Display Device:

XFA:ExoVideoMedia. Message: mOnErrorListener: Cannot display video: instanceId: 6529, layoutId: 98, regionId: 490, mediaId: 523(9200), Uri=rtsp://x.x.x.x:554/?src=1&freq=12188&pol=h&msys=dvbs&sr=27500&pids=48,169,73. Error=Source error. Type=0. Underlying Error=d0.q: null{contentIsMalformed=true, dataType=4}

dataType = 4 means “datatype_manifest” (exoplayer documentation)

The RTSP Stream works in VLC Player an looks like this:
rtsp://x.x.x.x:554/?src=1&freq=12188&pol=h&msys=dvbs&sr=27500&pids=48,169,73

Kind Regards
Sebastian