Abstract
In this article an interoperable framework for the delivery of scalable
media resources (e.g., in the standardized scalable video coding format)
is presented. The framework provides support for video on demand as well
as multicast streaming, and performs efficient, generic, and interoperable
adaptation of streamed content based on MPEG- 21 Digital Item Adaptation.
The server as well as the clients of the streaming framework implement the
MPEG Extensible Middleware and utilize the MPEG Query Format for querying
the available media resources. The framework has been fully integrated into
the VLC media player. The architecture for both VoD and multicast is
presented in detail. Finally, a comparison in terms of performance of the
generic MPEG-21 metadata-based adaptation approach to an SVC-specific
adaptation approach is provided.