HDR Recording Issue with iPhone 16

Hi, I've tried a couple of things to record 10 bits footage to the internal iPhone 16 Pro Max (iOS 18.3) storage with the Blackmagic Cam App 2.2.000142, but I always get the dropped frame warning (red exclamation mark) by the app. I already installed the app again and also completely reset my iPhone and restored a backup. Lastly I tried a storage speed test and it was quite similar to the privious model (1395MB/s max. / 1089MB/s av.). When I check the footage with ffprobe I couldn't find lost packages (flag=_D).

With the same settings => HEVC / 4k60/ Rec.2020-HDR / High Bitrate on iOS 17.7 I had no issues.

Any ideas to this behaviour? Can I really ignore it? Has anybody iOS 18.x and HDR@4k60 tested so far? Thanks for reading!

Having the same issue as well. Shooting on a 16 PM, 4K Log h.265, internal iPhone storage, max bit rate (which I’ve never had problems on previous versions of iOS). Shooting at 24 FPS is fine, but shooting at 60 FPS triggers the dropped frames warning and it doesn’t go away until I force quit the app. Again I’ve never had a problem with these settings in previous iOS versions. Changing bitrate and lens or stabilizations settings doesn’t help at all.

Any solutions, or do we have to wait for an update?

I’m not having any issues with my iPhone 16 Pro with internal recording at 60 fps H265 or even ProRes HQ for recordings of a few minutes with the latest iOS and BM app. It’s even ok at 120 fps. The only time I had an issue was recording ProRes HQ max bitrate at 120 fps for several minutes when the phone got hot and completely crashed without warning so I’m not going to push that but 60 fps seems fine over a few minutes at least.

In order to check if it’s the phone or the app, maybe try Cinema P3 which is free for a seven day trial. Again I’m not seeing any issues with that, even at the higher bitrates it can record at.

Thank you for the replies, good to know. Btw. the fun fact is, right now, it is working for me with no issues. I wish I could tell you what to do, the very last thing I did was the iOS 18.3.1 update.
I haven‘t changed my settings, so it is still:
HEVC (H.265), Max (81 Mbps), 4k, Rec.2020 - HDR

Thanks - so to be clear, y’all are NOT shooting in AppleLog/h.265 for the color space?

I updated the app again a couple days ago (and I’ve been on iOS 18.3.1). Still having the same frame drop issue with 60 fps in apple log + h265

H.265 is a compression method, not a color space. Apple log is usually combined with Rec. 2020.