iPhone 6s photos won't work in iMovie 10.1
When I import photos taken with my iPhone 6s (I've tried importing them from both the Photos library and from the Mac desktop), they show up in my iMovie project media as stills. But when I drag them into my movie's timeline, they just play as a black frame — no photo.
I even tried opening these photos in Photoshop first, adjusting them slightly and re-saving, but I still get the same behavior when i re-import them into iMovie and drag them into my movie's timeline..
The photos I shot with my old iPhone 5 that are in my Photos app library import and play perfectly. I've never run into this problem before.
Has anybody else experienced this problem/found a fix?
MacBook Pro, OS X El Capitan (10.11)