Can I import movies recorded in AVCHD format using iMovie for Mac?
It is possible if you use iMovie® '08/ Mac® OS X v10.6.7 or later versions. iMovie (v10 or later) and Mac OS X v10.9 are necessary to import AVCHD movies recorded in 60p/50p mode (PS mode).
Check the iMovie support page for the list of compatible cameras.