A QoS-based framework for distributed content adaptation

The tremendous growth of the Internet has introduced a number of interoperability problems for distributed multimedia applications. These problems are related to the heterogeneity of client devices, network connectivity, content formats, and user´s preferences. The purpose of this paper is to present a framework for transcoding multimedia streams. The proposed infrastructure takes into consideration the profile of communicating devices, network connectivity, exchanged content format, context description, and available customization services to find a chain of services that could be applied to adapt the content to the required needed format. Part of the framework is a QoS-based selection algorithm that finds the best sequence of adaptation services which can maximize users´ satisfaction with the delivered content.