I am 100% sure that the previous version of iMovie (10.1.7) was able to import MXF files running on macOS Sierra. Since the newest update, I’m unable to import MXF files into iMovie. “Hi there, I updated my MacBook Pro to the most recent High Sierra 10.13.2 and iMovie to 10.1.8. MXF import to iMovie impossible on High Sierra, how to fix? In this post, we will guide you through how to convert MXF files for editing on macOS High Sierra without hassles. At the moment, transcoding MXF files to MOV with Apple InterMediate Codec or ProRes codec would be a sensible solution.
Experiencing incompatibility issues using MXF files on macOS High Sierra? Actually, lots of iMovie users have reported this issue after updated their OS to High Sierra.