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Dave Braine

macrumors 68040
Original poster
Mar 19, 2008
3,990
352
Warrington, UK
Has Apple/MacOS/iMovie changed the way that it handles AVCHD files?

I'm having problems with a AVCHD camcorder that worked fine on my old MBP running Mojave. Plug in the SD card and it would appear in iMovie and import with no problems.

I now have an M1 MBA with Big Sur and iMovie 10.3.5. When I insert the card, iMovie takes an age to recognise it and when I try to import I get this error and then the beachball and I have to Force Quit.
Screenshot 2023-04-29 at 17.41.59.png


Digging down through the SD card with Finder, the MTS files will play with VLC, but if I use Quicklook, I get this error:
Screenshot 2023-04-30 at 14.10.36.png


At the moment I'm converting the files with Handbrake and then importing into iMovie, which is a bit of a pain with 148 files.

Anyone have a solution?
 
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