[James Shearer]

The tracker does stop. The problem is the point of reference (the corner of the LCD screen) I’m trying to track is no longer in the frame.
The question is ‘Is there a way to track a point that is no longer visible in the shot’? It seems to me it would need to estimate where the tracker should be.
I know the Mocha plug-in for After Effects (from Imagineer) can track points that leave the frame, I don’t know if Motion can do this. Or if there is any way to work around this problem.
Thanks for you assistance.

Digital Cowboys
MacPro Quadcore 3Ghz w/16GB ram & 16TB SATA Raid6, FinalCut Studio 2, Adobe AE CS4, C4D-10.5

[James Shearer]

What I have is a shot of a scene with a LCD screen with a ‘green screen’.
I am replacing the screen content with a video to be produced at a later date.
There are zooms in the shot that cause the corners of the screen to go out of frame at times.

I brought the clip into Motion and added an ‘analyze motion’ behavior.
Then set up four tracker points for pining the content to the screen corners at the beginning of the scene.
As I zoom in, and any corner reaches the edge of frame, that tracker point gets confused and doesn’t know where to go.

Consequently, when I try to do a ‘match move’ with the content for the screen, with four corner pinning the content gets distorted when the tracking points get confused.

Am I approaching this situation wrong?

Digital Cowboys
MacPro Quadcore 3Ghz w/16GB ram & 16TB SATA Raid6, FinalCut Studio 2, Adobe AE CS4, C4D-10.5