Iphone clips are in slow motion when imported

A file directly out of a phone or other similar 'device' will almost undoubtedly be VFR ... variable frame-rate media. What you set the phone for is the "target" FPS, and depending on whether there's motion and of what sort, the phone will try to save on data to write by constantly shifting how many actual frames per second it captures. The audio is of course captured directly.

PrPro, as a professional NLE, is designed to use CFR ... constant frame-rate media. You set a camera to "30fps", for instance, and for every second there are precisely 29.976 frames recorded to card. Period.

To get proper utilization of phone media in PrPro, it is heavily recommended on here to use the free download Handbrake to convert your clips to CFR, which it can do one by one or in batch/queue processes ...

HandBrake download page:  https://handbrake.fr/downloads.php

In that application's settings, in the Video tab, you need to click the little circle by "CFR", and ... very importantly! ... select the specific number frame rate you wish, probably the one set as the target FR in the phone, which for this post would be the number 60. If you use the auto or same-as-source settings, Handbrake will still output VFR even with the CFR button checked. Not good.

Also, check that the preset it chooses keeps your media's frame-size and rough file-size, the Mbps data figure. It wanted to convert my 4k/48Mbps phone media into 1920x1280/17Mbps media.

I wasn't amused ... but quickly created a preset to preserve original frame-size, and set the 'level' of compression to 4.2 and the "amount" to near "Placebo" ... where I got 4k media at dang near the file-size of my original media.

Then ... in PrPro's Media Browser, navigate to those converted files and select/"Import" ... it should all work great then. You can toss the conversions after use as you can always re-create them from the original media at need ... or of course, store them in your archives.

Neil