Cannot import videos into Photos after migrating to a newer Mac
Hi! I have a Panasonic Lumix DMC-LX5 camera which shoots videos in the AVCHD Lite format and stores them on an SDXC card. For years, I have successfully used Apple Photos to import and view the photos and videos from camera. I was using an old MacBook Pro running MacOS 10.13.6 and Photos 3.0. I more recently upgraded to an (Intel) MacBook Pro running MacOS 10.15 and Photos 6.0. While the Photos software happily imports photos from the SD card, it neither recognises nor imports the videos on the SD card. However it happily plays the previously imported videos so it still seems to support the AVCHD Lite format in some way. I have subsequently updated to MacOS 11.2.2 and the problem continues. I note that the Photos application has remained at version 6.0.
I use a third party USB-C dock with an SD card slot on the new MacBook Pro. To rule it out as a possible source of problems, I inserted the SD card into the SD slot in my old MacBook Pro and shared it over the network. Photos on my new MacBook Pro could only see the photos but not the videos on the card.
I also tried creating a new Admin account on my new Mac and then importing the SD card into the fresh Photos library in that account. Again, only photos were imported and no videos.
I would be grateful for any ideas as to how to solve this problem but I suspect a change between Photos 3.0 and Photos 6.0 may be causing this issue. Thank you for any help you can provide!
MacBook Pro 13″, macOS 11.2