Layered audiovisual coding for multicast distribution on IP networks

This paper describes the architecture and implementation of a trial multimedia multicast distribution mechanism for IP networks using layered audio and video compression that has been developed at BT Labs. The system consists of an array of servers capable of multicasting audiovisual content to large numbers of users who can view the content on their PC using a software client application. This could be used to access content including live television transmissions, business television, chairman´s talks, and stored training material, etc