[Kasper Nørgaard]

Hi i already did that.
I made a new tracking in mocha yesterday, where i tracked the background and made two track layers on the two persons and placed those layers over the BG layer, so they don’t disturb the BG tracking layer. I unchecked the gear icon the two person layers, so there will be no tracking data for these, but only the background. Perspective in the motion settings is also checked.

Afterwords I checked in Mocha, that the BG Tracking shape followed the BG in the clip and it did. But when i copied to clipboard (achtor point, position, scale, rotation) and paste to Null object. Delete the achtor point from that Null and parrent a blood layer to the Null.

But the blood layer seams to scale a bit wrong and the blood layer also rotates a little a certain place in the clip. (a little, but still too much rotation)

I don’t understand what the problem is, because the tracker seams to follow in mocha