[Spencer Katz]

Thanks, this is actually a stop motion project. An extended steel bar held the camera which was nudged along a track with a ruler. The actual differences in the two takes are less than 1mm, so that’s why I think there might be a way to lock them together. Each character has additional frames with green cards inserted to get a key, so I’m easily able to cutout the character, but then aligning it to the master background pass is the problem.

Thanks again, I’ll look up more about the rotobrush!

[Spencer Katz]

Unfortunately, nothing happened. At this stage, I don’t have the tracker properties applied to the clips, just their null objects. One thing that works a little is to apply the stabilization to the clips (which zooms them way out during the dolly shot), then activate 3D on the clips and create a new camera, and parent that camera to one of the takes.

This syncs things up I think, but because of the stabilization there’s a drift that has to be corrected every 12 or so frames.

Thanks though, any other ideas on how to possibly lock the same moving point from two extremely similar camera moves?

[Spencer Katz]

Thanks for your reply, I’ll check out that link. I got it working tracking the scale/position of the same spot on each take, then pairing them to a 3d camera that inverts it sort of. But I’m wondering about the 3d camera tracker. When I use it I get great track data and each take has so much of the same content I must be able to sync the 3d track data somehow. Any ideas?