From the course: After Effects CC 2023 Essential Training

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Creating and animating masks

Creating and animating masks

- [Instructor] In After Effects, masks are an important tool used to create transparency by allowing us to hide or reveal portions of a layer. A layer can have one or more masks and can either be static or animated. Here, we'll take a look at how to create masks and how to animate them. Here I've got some footage and a layer of text on top. And what I'd like to do is come up with a creative way to reveal this text and we can use animated mask to do that. So what I'd like to do is turn off this bottom layer, and just with my text layer selected, I'm going to come over to the pen tool, and the pen tool works very similarly to the one in Photoshop and Illustrator, if you're familiar with those. The pen tool has an option for automatically creating curvature with the RotoBezier option. I'll make sure this is off so that we can draw that in ourselves. What we want to do is just click and drag inside of our composition…

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