Multi frame replacement

Starting to create a 30 second spot using mocha to track positions of cards which will be replaced with video. There will be multiple–6 to 12 cards–to be replaced in the spot. Is it easier to track all cards in one pass in mocha via separate layers…or create one layer per card and do this 6 to 12 times?
Any other advice before I leap into this?
Just trying to save me some time and headaches down the line…thanks.

It depends if the cards overlap on top of each other. You shouldn’t have an issue either way. If the cards do over lap it might actually help to do it all at once. Just make sure that layer order = highest layer is the object closest to the camera.

You may want to check this out:
http://www.imagineersystems.com/stories/Sasa

Best,
Ross

—Quote (Originally by ggilland)—
Starting to create a 30 second spot using mocha to track positions of cards which will be replaced with video. There will be multiple–6 to 12 cards–to be replaced in the spot. Is it easier to track all cards in one pass in mocha via separate layers…or create one layer per card and do this 6 to 12 times?
Any other advice before I leap into this?
Just trying to save me some time and headaches down the line…thanks.
—End Quote—