I'm currently doing a lot of stabilizing with syntheyes. I would like to import the stabilized video from syntheyes to AE and use the motion tile effect to fix some of the black borders that result from the stabilization. The clips exported from syntheyes do have an alpha channel, but if I put the motion tile effect on them, the effect will not start from the edge of the visible video but rather from the edge of the whole frame. In other words, it's tiling the video so that also the alpha areas around the edges are included, leaving transparent holes between the edge.
Do you have any tips on solving this? How could I apply the motion tile effect to my video file so that it tiles only the part without alpha, and not the transparent edges. Do I need to track the video again in after effects and do some parenting, or is there a smarter way to attach motion tile right to the edge of my visible video?
I'm actually in exactly the same situation as you but still haven't figured out how to do so. How to "motion tile" around edges that are not the ones of the comp ? I have the alpha channel of the clip and can manage to have a mask around those edges.
Many thanks in advance !!