Scene cut detection issues - v16

I am having two issues with applying scene cut detection on a combined clip (.mp4):

i) After adding cuts to media pool, a few clips (randomly, as far as I can tell) give the "media offline" error message. Rest of them work fine. I have tried this with two different combined clips

ii) If on the cut page, I split a clip generated through the scene. cut detection, for a cut I might have missed out, then the color page still seems to consider these split clips as one. For example, if I try to flag one, then the other automatically gets flagged

I am new to Resolve.. thanks for your help

What's the source of your clips?

Hi Uli, it is a flattened .mp4 file


Resolve 16.2.8 and Fusion Studio under macOS Catalina 10.15.7
MacBook Pro 2017 i5 8gb RAM Intel Iris Plus Graphics 650 1536 MB

VFR or CFR?