Multimedia content adaptation: Operation selection in the MPEG-21 framework

Abstract

Whilst many content adaptation operations exist and a number of different approaches are currently being proposed, selecting the right content adaptation operation is largely an ad hoc process. In this paper we discuss issues pertinent to content adaptation operations and in particular the process of their selection by taking the view that a selection process needs to be informed both by the results of the evaluation of generated content and the analysis of the content. The discussion' is made in the context of MPEG-21 which supports both Quality of Service (QoS) and user priority preferences, the combination of which are essential for instituting a process of selection of appropriate adaptation operations.