Blackmagic Forum

Hello

I wonder if anyone could help or has experienced the same. When I use optical flow on a 50% speed clip, it caches fine and plays well. Then it cannot render in whole project render, states a rendering error. If I try to render the clip manually it renders horrible flashing and totally broken down.

I find this a recurring problem in DR.

It's pretty much impossible to help you without further information.
Optical Flow is a demanding operation.