Aspect Ratio is an iMovie plug-in that changes the clip's aspect ratio, either enlarging or shrinking the clip. It's primary use is to re-establish the correct aspect ratio after rotating a non-square pixel clip, or after importing footage from a different video format (e.g. TV, NTSC<-->PAL, 16:9). The plug-in sports pre-sets to convert between the most common video-formats, which can additionally be overriden by hand-tuning +/-50% in both the horizontal and vertical direction.
Version 1.1: support for 16:9 PAL
iMovie 3.0 or later