Multimedia presentation: generic and implementation model

A multimedia presentation is a synchronized, sequential or concurrent, and possibly interactive, delivery of streams of multimedia data such as video, audio, text and still images using audio-video output devices. The first step in realizing a multimedia presentation is to find a position for each media object in space and in time. Resolving space and time positions and switch conditions lead to the implementation diagram, in which a formal description of the implementation of the multimedia presentation is given. The spatio-temporal object-oriented data model for multimedia data is proposed. This model is given as the UML class diagram