Painting on the iPad over Live Cam Feed

Hi

My name is Mario and I´m working at a theater in Dortmund.

For an upcoming project I´d like to paint over a live cam feed with an iPad using the c74 App. The output I want to route via Syphon into Resolume Arena.

All parts separately work already, but I´m not getting it all together.

The video I get in the pwindow is flickering, like there is a kind of layer problem.

I must admit that I´m an absolute MaxMSP Novice.

I´ve attached the patch I made and hope theres someone who can help me to figure it out.

Thanks already

Mario