was wondering if any of you knew how to fix this issue. When I render my comp in After Effects, I see these weird glitches in the render (like black triangular spots of missing video).

I have uploaded an example of the issue here:

  • I had something similar recently and - sorry to say - didn't find a solution. I assume in my case it was / is a bug in the effect used. It had to do with masks / alpha channel but since I needed to use a specific mask, I couldn't work around the bug. Commented Mar 13, 2016 at 4:24

1 Answer 1


Had the same problem. Put a black solid in the background. It worked for me.

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