"Share" iMovie to File, try to open and get error "The file isn’t compatible with QuickTime Player."
So, I have a video project that I completed in iMovie that is just under 7 minutes long. I want to save the file to my desktop for use, so I clicked "Share" and then "File". I've attached a screenshot of what these files look like on my desktop. I have no idea what the bottom file is and if I try to open the .mp4 file I get the error "The file isn’t compatible with QuickTime Player." I assumed that the file is still processing/converting, but I've been letting it work for well over an hour and it has not become a playable file. The "Show Activity" pie chart in the top right corner of iMovie shows that it's working to export the file, but should it really take this long? Is there a fix? Or is there a timeframe I can expect for how long it'll take? I have a bit of a deadline.
iMac 21.5″ 4K, macOS 10.15