From the course: After Effects Compositing: 3 Advanced Matching and Looks

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Fix sloppy precomps with the Preserve frame rate when nested option

Fix sloppy precomps with the Preserve frame rate when nested option - After Effects Tutorial

From the course: After Effects Compositing: 3 Advanced Matching and Looks

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Fix sloppy precomps with the Preserve frame rate when nested option

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In case you haven't noticed it already, on close inspection, it looks as though the roto on the figure travelling over the car is no good. You can see this boiling mat line on the front edge of his skateboard and especially on his leg, and all around him. However, there is a simple fix once you learn to recognize the root of this problem, I'm going to show you that now. First, let me familiarize you with what's going on here. We're not going into depth in this course on how to roto the shot. But underneath this com, is a separate assemble com. And then, within there is a subcomp that contains the original roto. Here you see a lot of key frames that were used to roto this figure, so that's for the board, and then down here is all the roto on him. And as you can see, we're using in between frames. So, we don't have roto on every frame, but we do have quite a lot of masks, and they're all keyframed every 10 or 20 frames on average. Well, here the roto looks fine. It looks good. It's…

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