From the course: After Effects Compositing: 5 Rotoscoping & Edges

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Refine mask controls

Refine mask controls

- There are basic adjustments that can be made to any mask, and those are found by twirling down the mask controls themselves. Let's take a look at how we can use these other mask controls, feather, opacity, and expansion, to refine the look of the spot removal in this particular shot. Let me just zoom in on my spot, because although it's looking pretty good, if I hide the mask with the hide shortcut I can see a distinct outline around the de-spot operation is occurring. So I'm going to soften that, just by adding mask feather. That's normal to add a bit of feather to any mask. This is a little bit heavier feather, at 13. If I want to go even heavier than that, because I can still kind of see that spot there, I can expand the mask, which is going to grow its boundaries. And then increase the feather some more. Feather will work inward and outward from the selected area. You can just barely see the effect of heavy feathering on here. What's actually happening is the spot itself is…

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