The document summarizes a presentation on MPEG-21 given by Dr. Christian Timmerer. MPEG-21 aims to create an interoperable multimedia framework with three steps: understanding relationships between components, developing new specifications to fill gaps, and achieving integration of standards. A key concept is digital items, which are structured digital objects with identification and metadata. Digital items can be adapted and processed to satisfy transmission, storage, and consumption constraints.

1. Dr. Christian Timmerer, Klagenfurt University, Austria Acknowledgments : I. Burnett, H. Hellwagner, F. Pereira, A. Vetro, R. Van de Walle Workshop on MPEG Technologies January 2007 Marrakech, Morocco

6. Saturday, January 20, 2007 Dr. Christian Timmerer, Klagenfurt University, Austria

7. Saturday, January 20, 2007 Dr. Christian Timmerer, Klagenfurt University, Austria The DI is the fundamental unit for distribution and transaction within the MPEG-21 framework.

8. Saturday, January 20, 2007 Dr. Christian Timmerer, Klagenfurt University, Austria Vision, Declaration, and Identification Digital Rights Management Adaptation Processing Systems Misc Pt. 4: IPMP Components Pt. 5: R ights E xpression L ang Pt. 6: R ights D ata D ictionary Pt. 7: D igital I tem A daptation Pt. 10: D igital I tem P rocessing Amd.1 : Convers. And Permissions Amd.2 : Dynamic and Distributed Adaptation Pt. 1: Vision, Technologies and Strategy Pt. 2: D igital I tem D eclaration Pt. 3: D igital I tem I dentification Pt. 9: File Format Pt. 16: Binary Format Pt. 18: D igital I tem S treaming Pt. 8: Reference Software Pt. 11: Persistent Association Pt. 12: Test Bed Pt. 14: Conform. Pt. 15: Event Reporting Pt. 17: Fragment Idenfication Amd.1 : Add‘l C++ bindings Amd.1 : DII relationship types

12. Saturday, January 20, 2007 Dr. Christian Timmerer, Klagenfurt University, Austria < DIDL > < Item > < Descriptor > < Statement mimeType=&quot;text/plain&quot; > Best of Mozart </ Statement > </ Descriptor > < Descriptor > < Component >< Resource mimeType=&quot;image/jpg&quot; ref=&quot;cover.jpg&quot; /></ Component > </ Descriptor > < Item > < Descriptor > < Statement mimeType=&quot;text/plain&quot; > Le nozze di Figaro KV 492, Overtüre, 4:08 </ Statement > </ Descriptor > < Component > < Descriptor > < Statement mimeType=&quot;text/plain&quot; > Bitrate 192kbps </ Statement > </ Descriptor > < Resource mimeType=&quot;audio/m4a&quot; ref=&quot;track01.m4a&quot; /> </ Component > </ Item > <!-- further items ... --> </ Item > </ DIDL >

23. Saturday, January 20, 2007 Dr. Christian Timmerer, Klagenfurt University, Austria ... <TerminalCapability xsi:type=&quot;CodecCapabilitiesType&quot;> <Decoding xsi:type=&quot;ImageCapabilitiesType&quot;> <Format href=&quot;urn:mpeg:mpeg7:cs:VisualCodingFormatCS:2001:4&quot;> <mpeg7:Name xml:lang=&quot;en&quot;> JPEG </mpeg7:Name> </Format> </Decoding> <Decoding xsi:type=&quot;VideoCapabilitiesType&quot;> <Format href=&quot;urn:mpeg:mpeg7:cs:VisualCodingFormatCS:2001:3.1.2&quot;> <mpeg7:Name xml:lang=&quot;en&quot;> MPEG-4 Visual Simple Profile @ Level 1 </mpeg7:Name> </Format> </Decoding> </TerminalCapability> ... Adaptation Engine ... <MediaFormat> <VisualCoding> <Format href=&quot;urn:mpeg:mpeg7:cs:VisualCodingFormatCS:2001:2.2.2&quot;> <Name xml:lang=&quot;en&quot;> MPEG-2 Video Main Profile @ Main Level </Name> </Format> <Frame height=&quot; 720 &quot; width=&quot; 480 &quot; rate=&quot; 30 &quot;/> <BitRate> 5000000 </BitRate> </VisualCoding> </MediaFormat> ... MPEG-7 DIA

25. Saturday, January 20, 2007 Dr. Christian Timmerer, Klagenfurt University, Austria traditional Web (XML/XSLT) publishing BSD-based multimedia “publishing”

33. Contact Information : Dr. Christian Timmerer Klagenfurt University Department of Information Technology (ITEC) Universitätsstrasse 65-67 A-9020 Klagenfurt T +43 (463) 2700 3621 F +43 (469) 2700 3699 E [email_address] W http://research.timmerer.com Visit the IT Campus Carinthia http://www.it-campus.at