In FCP when I open up Log and Transfer and then go to Import Preferences, I have the following settings chosen:
Source Format: P2 AVC-Intra
Target Format: Native
I also have
Source Format: AVCHD
Target Format: Apple ProRes 422
There are a few other Source Format/Target Format lines but they’re not AVC related so I didn’t type them out here.
Does this mean that AVCHD footage would have been turned into ProRes but AVC-Intra footage would have been wrapped as an MOV but still technically AVC-Intra?
And in case this helps diagnose (or solve) the problem, I’ve uploaded a very small (6MB) video clip shot with the AG-HPX300 camera and transcoded(?) by FCP as an example, available for download here: https://tinyurl.com/82pncht