MPEG-21: goals and achievements

The goals and achievements of MPEG-21, an open standards-based framework for multimedia delivery consumption, are discussed. MPEG-21 is considered as the newest of a series of standards, produced by the Moving Picture Experts Group. The MPEG-21 enables the use of multimedia resources across a wide range of networks and devices. It shows interoperability by focusing on the way in which the elements of a multimedia application infrastructure relate, integrate and interact.