Live photos being imported as video
When I import photos from my iPhone, Photos will import years' old live photos as videos that are 2-3 seconds long. It's messing up my library and I've not figured out a way to prevent this. I've run the repair tool but the problem is still there.
I've recently moved from an Iphone 7 to an iPhone 12 and used a backup (which included all the photos) to do so. I think it was around this time this issue started happening.
I'm using an iMac 2012 running Catalina 10.15.7 and Photos 5.0 (161.0.120). My iPhone is running the latest OS
Thanks.
iMac 27″