From the course: After Effects Apprentice: 13 Paint Roto and Puppet

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Exploring Motion Blur and Decontaminate Edge Color

Exploring Motion Blur and Decontaminate Edge Color - After Effects Tutorial

From the course: After Effects Apprentice: 13 Paint Roto and Puppet

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Exploring Motion Blur and Decontaminate Edge Color

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- [Narrator] Finally, let's talk about motion blur and decontamination. Roto Brush has the ability to automatically detect what portion of an edge is moving and give that edge additional blur to compensate, just as real footage may be blurred. Let's go to around frame 26 where his hand is raising somewhat quickly. If I turn off Use Motion Blur, all I'm going to get is my softened, feathered edge around this area. However, if I enable Use Motion Blur, you'll see that this hand is more blurred than other portions of his body which are not moving nearly as much. If I want to, I can solo this layer and compare without and with. Look at just the alpha channel. Without motion blur, even edge feather all the way around. With motion blur, increased blur where his hand's moving. And I can tweak the motion blur settings to include more samples per frame. Basically smooth out any ghosting if there's fast movement. And also set shutter angle to match how my shot was originally taken. No shutter…

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