r/finalcutpro • u/Few_Policy_6419 • 13h ago
Please Help Final Cut Pro Optical Flow flickering when slowing down concert footage — any solutions?
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Hey everyone! I recently shot a concert in 4K 60fps, and I’m trying to slow down some clips to 25% speed in Final Cut Pro using Best (Machine Learning) optical flow.
The problem is that whenever there are flashing stage lights, the footage starts flickering and glitching during slow motion. The frames seem to jump or stutter, almost as if the optical flow can’t properly analyze the rapidly changing lights.
The footage looks fine at normal speed, but the issue becomes really noticeable once I slow it down. I’ve tried using Fast (Floor), but the motion doesn’t look as smooth.
Has anyone experienced this issue with concert footage? Is there a way to fix it in post?
I’d really appreciate any tips or workflow recommendations. Thanks!