Can't get video showing with tizen.multiemedia.player

I have tried several example’s with Player functions:
nuget: Tizen.TV.UIControls,
githun: XamarinMediaManager](GitHub - Baseflow/XamarinMediaManager: Cross platform Xamarin plugin to play and control Audio and Video)
and some trials myself.
I can get de video to play, stop it, start it etc.
I hear the sound, but there’s no video, not on the emulator, not on my samsung TV.

Some times, when trying to set the Display property to a View or a Window there’s an error stating something about no raw_video possible.

what am i missing, where do i need to look for an answer to this problem?