Hypervideo: a Parameterized Hotspot Approach

The present paper describes a possible parameterized implementation of hotspots in hypervideo, allowing lower network overhead during hypervideo streaming over the Internet. During the playback it is possible to calculate the shapes and positions of the different hotspots, based on an interpolation from the parameterized data. Parameterized hotspots can be maintained in a different file with respect to the video content, and multiple video files can be referred from the same external hotspot file. The authors implemented a small prototype, using QuickTime, in order to evaluate the described functionality. The prototype uses an external XML file for maintaining the information on the different active regions and enables different actions as a result for the activation of hotspots.