I am using the cloud service for 2d tracking of images. The image gets tracked, and I know how to get the metadata uploaded. But, how will i be able to track the frame as the iPad is moved? For e.g. i have an image as a trackable. A portion of the image, when tracked, plays a video on top of it (sort of like, in-page video). How do I maintain the proper frame of the video with the Vuforia tracking ability?