Video Preview Has Pixels Removed Along a Horizontal Line

Apr 13, 2020

I have an odd one here. After the most recent upgrade, there appears to be some small number of pixels being lopped out of the middle of videos (.mp4) along a horizontal line. It's particularly noticeable when there's movement. And it also results in an open horizontal space at the bottom of the frame (presumably the height is the number of pixels being zapped). I'm seeing this in slide authoring view and preview. But I'm NOT seeing it in published output.

I'd appreciate any ideas on this. Thanks.

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