From the course: After Effects Apprentice: 12 Tracking and Keying

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Using garbage masks for keying

Using garbage masks for keying - After Effects Tutorial

From the course: After Effects Apprentice: 12 Tracking and Keying

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Using garbage masks for keying

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When keying in green screen or blue screen footage, you don't have to or necessarily want to key the entire frame. When you're using a keying effect, your focus is creating a really good edge close to the actor you want to keep. The rest is extraneous junk that you can use a duller edge tool like a mask rather than a keying plug-in to get rid of. Now this image provided by Alex Lindsay and Pixel Corps shows a wide shot of a full set that has many things going on. We can see the back wall, we can see different lighting stands in the image. All we want to do is just key the area around this man. We won't key the rest of this. Therefore, we would create a mask around our action, excluding anything that we know we don't need, such as these two stands here, and then focus on getting a good key just around that individual. In addition to very obvious things, such as he stands this piece of cloth off to the side, etcetera, lighting will vary across a green screen stage. You can see here…

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