Glitching iPhone Video on my Studio Ultra

[Daverich4]

I'm having a problem playing videos shot with my iPhone 12 on my M1 Studio Ultra that I haven't noticed before. The phone is on IOS 17.0.3 and my Ultra has 64 GB of Ram and is on macOS 13.6. The videos play smoothly on my phone and iPad but stutter on my Mac. It's that way whether I view them in Photos, Preview or DaVinci Resolve. I've transferred them to the Mac via Photos, Email & AirDrop and made sure they they were H.264. I've also tried sizing them to a lower resolution. No luck in solving the problem. Can someone suggest a next step to take? Thanks.

 

[yellowbunny]

I've tested 4K videos from my 13 and they playback perfectly fine on M1 Max Studio. Sounds like there is an issue on your OS maybe?

 

[Daverich4]

I've tested 4K videos from my 13 and they playback perfectly fine on M1 Max Studio. Sounds like there is an issue on your OS maybe?

Not sure. I’ve never had this problem before.

 

[ColdCase]

Does HDR have anything to do with it? Or Ventura?

 

[Daverich4]

Does HDR have anything to do with it? Or Ventura?

It’s just video from my phone and I’ve not had a problem with Ventura previously.

 

[ColdCase]

I was just thinking, perhaps, that the new iOS or newer phones record in HDR and MacOS may not deal with it smoothly... I believe there is a setting that turns off HDR. Dunno, just an idea worth every penny you paid for it