This poster discusses the multichannel publication of multimedia presentations using MPEG-21 DIDL and extensions. Different descriptions belonging to one MPEG-21 content item are combined and processed into a publication targeted at a specific channel and platform.

Congenital adrenal hyperplasia (CAH) due to 21-hydroxylase deficiency is the most frequent inborn error of metabolism, and accounts for 90-95% of CAH cases. The affected enzyme, P450C21, is encoded by the CYP21A2 gene, located together with a 98% nucleotide sequence identity CYP21A1P pseudogene, on chromosome 6p21.3. Even though most patients carry CYP21A1P-derived mutations, an increasing numb...

This paper develops a number of aspects of metadata-driven adaptation within the MPEG-21 framework that we consider are not clearly covered in the standard. Specifically, the paper introduces three complementary description tools that we have made use of and that we consider would fill certain gaps in the standard. Besides, this paper offers a group of architectural design patterns along with a...