Not sure if anyone has came across this problem. I recently upgraded to a 32g micro sd card. When I'm transferring my videos off my Mavic and onto my MacBook Pro, everything is great. When I try to export the 4K file to a 1080p on QuickTime its tells me "can not save video". It never did that before. It only seems to work when I have the controller on WITH my iPhone 7 Plus plugged in and turned on. Unless I'm just crazy and that has nothing to do with it, I have idea what is going on with that. If anyone has has ran across that problem, please help. This is very annoying. Thanks!
