What is Digital Item Adaptation in MPEG-21?
The overall goal for Terminals and Networks is to enable interoperable and transparent access to resources across networks and terminals. Digital Item Adaptation has been identified as one essential aspect of Terminals and Networks that will provide tools to support resource adaptation, descriptor (metadata) adaptation, and Quality of Service management. As part of this work item, a description of usage environments, including terminal and network characteristics, as well as information describing user preferences is required. Such descriptions will support resource adaptation and delivery for a variety of application environments and will enable Quality of Service to be managed by the various Users that exchange and process content in the form of Digital Items. Additionally, this work targets the description of content representation formats to enable their adaptation.
