Modeling Quality Adaptation Capabilities of Audio-Visual Data

This paper describes the modeling part of the project CODAC (Modeling and Querying COntent Description and Quality Adaptation Capabilities of Audio-Visual Data). The CODAC project defines a common framework for modeling content information and quality adaptation capabilities of audio-visual data. Descriptions which are indexed and then stored in a metadatabase, will finally be encoded as an MPEG-7 description. Such a model enables us to provide active components with valuable information to govern or enhance their media scaling, buffering, and caching policies on the delivery path to the client (network routers