Apple ProRes iPhone Video Recording Dropped Frames

i recorded a 30 minute clip on an iPhone 15 Pro, using 4k Pro Res 60 fps.

I recorded to an external drive that is USC-C to Micro B Male (USB 3.0 speeds of 5Gbps).

The video is so choppy, it’s unusable. It registers at 24fps on QuickTime, but there will be seconds of video that will be a frozen frame on the source footage.

A few questions:

What did I do wrong? Is the USB-C hard drive not fast enough?
is there anyway to recover the footage? Was the data never recorded in the first place?
Whats the longest clip length you recommend for 30 minutes?

iPhone 15 Pro, iOS 17

Posted on Oct 1, 2023 2:00 AM

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4 replies

Oct 1, 2023 2:04 AM in response to csayers112

csayers112 wrote:

I recorded to an external drive that is USC-C to Micro B Male (USB 3.0 speeds of 5Gbps).

I don't think you can record to an external drive. Can you please explain the process used by you?

Did you jailbreak your device? Don't Jailbreak.

Nov 26, 2023 12:44 PM in response to csayers112

This happened to me as well with the exception that I did not record to an external device. The video is a 1 minute clip on ProRes 4k HDR with the ultrawide camera on the 15 pro max and you could even see it dropping some frames while recording.

csayers112 Author

Level 1

4 points

Oct 1, 2023 2:50 AM in response to SravanKrA

No, iPhone 15 Pro allows you to record ProRes video up to 60fps in 4k to an external USB-C device.

Jan 2, 2024 6:07 AM in response to csayers112

It does. However, I recorded a number of files and I can only play 3. The others are there but can't play them anywhere.

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Apple ProRes iPhone Video Recording Dropped Frames