[SarahC_]

I bet it streams the video like a protected HDMI movie... so the video stream isn't part of the WDDM's Team's Window - but placed on top of it.

Interestingly that can be overcome by moving the video just a little between two screens, which reverts it back to a WDDM surface. =D

Or TWO monitors, with "Duplicate" selected, and a camera recording the second monitor under the desk.