iPhone codec compatibility?

I have media from both a DSLR and my iPhone. I took a short clip this morning on my iphone 7plus and Resolve 15.0.0.086 shows the media as "Media Offline". I can see the clip and edit it using iPhone apps and it plays normally on my PC using VLC. DSLR clips are importing normally.

I had this problem with iPhone clips before moving from 14.x to 15 beta. Now the same issue seems to be back.

VLC reports the codec as follows:
MPEG-H Part2/HEVC (H.265) (hvc1)
Video Res: 1920x1080
Frame rate: 57.302788

Here's a link to the little clip https://1drv.ms/v/s!An_3r5i7D8DGlLxBtELGZaqDucwQlQ

I'm less than a year into learning video editing and Resolve is my first full fledged NLE so apologies if this is off topic!

Best,
Dan

Davinci Resolve 15.0.0.086
Dell XPS 15
Windows 10 1803 17134.228
Intel Core i7-6700HQ @ 2.6GHz
16 gig RAM
1 Terabyte M.2 SSD

Do you have the Studio version? I think the free version can only decode these on the Mac.

No - I use the free version as a beginner. I had no issues importing these before upgrading to 15.x stable a couple days ago. I recently did a clean install of Windows 10 on this machine and did not install iTunes or Quicktime initially. Based upon your thought, I installed Quicktime, rebooted & still had no luck.

Any other recommendations? It seems like a ton of free users will be using iPhone video!