From the course: After Effects Compositing: 4 Color Keying

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Feather edges with Channel Blur

Feather edges with Channel Blur - After Effects Tutorial

From the course: After Effects Compositing: 4 Color Keying

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Feather edges with Channel Blur

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- So if you're finding that refined soft matte is not worth the extra overhead and trouble to tweak it and you're looking for a simpler option to refine your matte extraction I would suggest a couple of very simple ordinary tools. One, to feather the mask and the other to just control the threshold angle a bit further. So for this I'm going to zoom back in on the tree and turn off the background. So again we have a bit of thresholding here but it's a bit chunky and so to feather that hidden among the blur effects is channel blur. Now if I go heavy on this not only does it not look right but you're going to see something that I need to do here which is set repeat edge pixels use at full frame. I'm going to use this sort of very very low level. In fact, by turning on the modifier key, holding down command because I'm on a Mac I can increment by tenths and that's about right. Now this is different from altering the threshold with extract because I'm taking the threshold that was already…

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