From the course: After Effects CC 2018: Editors and Post Essential Training

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Render footage with an alpha

Render footage with an alpha - After Effects Tutorial

From the course: After Effects CC 2018: Editors and Post Essential Training

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Render footage with an alpha

- [Instructor] If your composition was created with the intent of it being keyed over other footage, like a lower third, then you'll need to output a render with an alpha channel. Here, we'll take a look at how to do this two ways using the Render queue, one with an embedded alpha, and the other as a separate movie. So my composition here has a lower third element, and I've got it currently keyed over a piece of footage that I'm using as reference. Obviously, I don't want to render this footage and I notice that there's a couple other things. Let's go ahead and address the background here first. I can certainly turn this layer off, but as I'm building this and refining it, I was using this as reference, there's a way for us to still view this in our composition window, but not have it render, and that's through the use of a guide layer. With my layer five selected, I can right-click on it and say Guide Layer, and essentially this is telling After Effects that show me this background…

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