From the course: After Effects Guru: Keying with Keylight
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Outside Mask - After Effects Tutorial
From the course: After Effects Guru: Keying with Keylight
Outside Mask
- [Narrator] Let's go ahead and open Composition 4.2, Outside Mask. Keylight has already been applied to the clip, but we clearly see that there is a black border around the subject, and we need to get rid of that. We can get rid of this a number of ways. We could mask it directly with one of the mask tools in After Effects. Let's go ahead and do that. Select the clip. It is the top one, and grab the rectangle tool and simply draw a rectangle so that we keep what we want inside of the rectangle and anything outside of the rectangle will be invisible. So we could do it like that, and that works really, really well. We could also select the transparency of this mask to "none" and then, from the Outside Mask section in After Effects, we could select this Mask 1 here. You can see that the result is identical to what we got before. Now, you could also use something called "Source Crops." So let's go ahead and delete that mask, and now expand the Source Cropped section here in Keylight. You…
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