Virtix Pan & Scan for iMovie for Mac

From Virtix, Inc.:

Virtix Pan & Scan allows iMovie users to move across an image at a constant speed, or gently speed up at the beginning and slow down at the end of the panning motion. Virtix Pan & Scan contains effects to hold the position at the beginning and end of a pan. One effect combines two other effects by doing a half-second swish pan and holding the position at the end of the motion.