ABSTRACT
In this paper we present an interoperable multimedia delivery framework
for scalable video coding based on MPEG-21 Digital Item Adaptation (DIA).
In can be used to transmit scalable video contents within heterogeneous
usage environments where the properties of the usage environment (e.g.,
terminal/network capabilities) may change dynamically during the
streaming session. The usage environment is signaled by interoperable
description formats provided by the DIA standard. Additionally, the
adaptation itself is done by exploiting the standard's generic adaptation
approach, i.e., independent of the actual coding format. Thus, the overall
framework is also applicable for other scalable coding formats.

Index Terms— Multimedia Streaming, Heterogeneous Environments, Universal
Multimedia Access, Scalable Video Coding, MPEG-21 Digital Item Adaptation