The tracking mechanism is motorized but it doesn't pitch the camera at the same rate. There is a potentiometer on the pivot point that there is feedback to the motor that loweres it's speed as it approaches near vertical. A bore sight is used to line up the camera onto the rocket during set up and a telephoto lens is used becasue of the distance the camera is away rom the rocket.
The pitching mechanism is triggered when the rocket first moves via the activation switch. This eliminates any error or delay due to the ignitor lighting the motor incosistantly.