movies

Randomly, my .mov video switched to a .jpg, but only when I try to import it to another program. I tried to import this .mov file (<500mb) to Canva, and it comes in as a .jpg of the first frame, not a video. I tried to reduce the size in VideoSmaller, but again, it shows as a .jpg image, not a video.

I saw a similar question on here from 2020 with no real resolution. I'm using the current OS version, have not upgraded recently. the video size is not too large for what I'm doing.

Any help?

thanks.