sbhabyn wrote:
… do you think that converting AVCHD files to mov before import into iMovie is a good idea ? …
there is no such thing as an 'AVCHD-file'.
AVCHD is at first a folder structure.
aside other folders such as CLIPINF or PLAYLIST, you'd notice a STREAM folder, which - finally 😉 - contains .mts files.
these are the 'video clips'.
and, again: mts is just a media-wrapper/container.
there're lots of tools, so-called re-wrappers, allowing to 'strip' the mts and re-package its content into mov WITHOUT converting!
'cause, inside an mts is regular h.264.
it's an endless & fruitless discussion, to edit h264 straight or convert it into a more handy intermediate (such as iM does to AIC or FCPX does to proRes) ....
in short: AVCHD HAS to be 'converted to mov' - otherwise iM doesn't handle it 😉
… but iM does this automatically on Import from Cam.