Update to macOS High Sierra
Update your Mac to macOS High Sierra. If you can't update to macOS High Sierra and you have to work with HEVC media, try the two solutions below.
Optimize media when collaborating with others running macOS High Sierra
You might need to work with someone using Final Cut Pro X on a Mac running macOS High Sierra. If they send you a library that contains HEVC media, ask them to optimize the media before sending the Final Cut Pro X library to you.
Record in Most Compatible mode in iOS 11
Use Most Compatible mode on the following devices when recording video in iOS 11:
- iPhone 7
- iPhone 7 Plus
- iPad Pro (10.5-inch)
- iPad Pro (12.9-inch) (2nd generation)
To turn on Most Compatible mode on your iOS device, tap Settings > Camera > Formats, then select Most Compatible.