MPEG-7 based dynamic metadata
In this paper, we describe a method for adding dynamic metadata to multimedia data, based on the emerging MPEG-7 standard. The method enables metadata to be dynamically added, removed, altered or processed in a generic way. Objects, interfaces and events (concepts from object technology) are defined using descriptors and descriptor schemes written in XML. By creating objects and interfaces, the content creator can add functionality to the metadata. This functionality can then be applied in an application dependant manner. Finally a preliminary implementation of the framework was created in order to validate the proposed methods. The current implementation uses the Apple QuickTime1 framework as a host framework. Using the QuickTime movie format and the QuickTime framework, a format for transporting and manipulating the metadata has been created.