Extendable media stream mechanisms for heterogeneous communication environments

Transcoding functions are usefulness for intercommunication on interconnected heterogeneous computer networks. However, it is difficult for distributed communication systems to prepare the suitable transcoding functions in advance because the required intercommunication environments are not always static. Accordingly, we should consider dynamic transcoding functions with relocatable decision methods. In this paper we propose a middleware system that realizes dynamic transcoding functions by extendable media stream.