I just got my Mavic 2 and set it up for .mov file type. The files from the card display the size (resolution) and the file size. I transferred them over via a card reader. My Macbook (running Sierra) will not read them. I turned off the recording BEFORE shutting down (probably every time, but definitely the last flight).
I followed other suggestions from similar posts to put the card back in the Mavic2 and power it back up, leave it for a minute, them power down (theoretically allowing the M2 to finish 'indexing' or finishing the files or whatever). That didn't work.
I 'previewed' the files with the iPad mini I used as my flight display. I was able to view each one (the original and the cache versions). So the files are there, but the M2 has not coded them correctly or something. So unnerving. I never had this problem with my P3 4k files.
I followed other suggestions from similar posts to put the card back in the Mavic2 and power it back up, leave it for a minute, them power down (theoretically allowing the M2 to finish 'indexing' or finishing the files or whatever). That didn't work.
I 'previewed' the files with the iPad mini I used as my flight display. I was able to view each one (the original and the cache versions). So the files are there, but the M2 has not coded them correctly or something. So unnerving. I never had this problem with my P3 4k files.