Crop and Rotate the Video in the SimplePlayer

[cactusjack66]

Is there a way to crop and rotate the video in the SimplePlayer?

I played around with the RegionOfInterest in the TransformParameters class in the player, but this does not work.

Out of the box there seems to be a bug in the FFmpegDecodedVideoScaler, where the Scaler is created.
The new sizes based on the RegionOfInterest are not calculated correctly.
But when I try to correct it, it does not work either, the video stays unchanged....