I'm cutting together a video from .mp4 files I've ripped from DVDs, iMovie HD 6 to put them together and edit out bits I don't want. The problem I'm having is importing anything in widescreen format. When I drag the video onto iMovie it gives me a waiting time of well over an hour, where as for a old 4:3 format file it takes a few second. Any way to speed this up? Or is it just something that means I've got to ditch iMovie and get something else?