I know this isn't an AE specific question per se, but perhaps one of you has run into this problem.
I have a corner pin track that's rock solid in my precomp. But when I put that precomp into another comp, the track is slipping. I can't, for the life of me, figure WTF is going on.
Tracked in mocha at the same frame rate and resolution. Square pixels. No time stretching or remapping.
Do the precomp and the comp itself have different frame sizes? It looks almost like a sub-pixel issue.
Yeah, the frame sizes are different, but it shouldn't matter. Comp A contains the corner pinned layer and another layer containing the talent chromakey. The corner pin layer is perfect in Comp A and lined up exactly with the talent chromakey.
If I pre-rendered Comp A, and put it into Comp B, there wouldn't be any slip. So there's something going on between precomps. (And Collapse Transforms is turned off, btw).