From the course: After Effects CC 2021: Character Animation Essential Training

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Track mattes

Track mattes - After Effects Tutorial

From the course: After Effects CC 2021: Character Animation Essential Training

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Track mattes

- [Instructor] Masks are a great way to hide or reveal portions of our layer. But what if we wanted to have one layer cut out another layer? We can use what are called track mattes and we'll see how we can use them here to hide or reveal parts of our characters. In this composition, I've got an animated texture and it's called fiesta. It's just a bit of confetti bouncing around. But if I come over here to preview my alpha channel, you'll see that it's all white, indicating that it's all opaque, there's no real transparency here. Let's switch back over to RGB and let's introduce some transparency. We'll make sure our layer's selected and then come over to our rectangle tool. And then, we'll click and drag to create a brand new mask. I'll go about half way down and under the mask feather property, I'll click this icon so we can unlink the proportions, this way I can introduce feathering just on the vertical axis only.…

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