MPEG 21 - DIDL Tutorial

Watershed, 1 Canon's Road, Harbourside, Bristol BS1 5TX

Wednesday 31 January 2007


Introduction | Programme | Booking Form | Venue | Speakers

Introduction to Tutorial

In the spring of 2003, the Los Alamos National Laboratory (LANL) Research Library began laying the foundation for a comprehensive repository architecture to hold a wide variety of digital objects.

In seeking a standards-based solution for containing, describing, and accessing complex, multicomponent content source collections, the library investigated numerous solutions, finally selecting the MPEG-21 DID standard. Permitting the association of standard-form metadata with given files, DID is an extremely extensible standard for packaging digital content.

Between Summer 2004, when the first records were added to the Research Library's aDORe repository, and Fall 2006, more than 10 datasets comprising approximately 85 million records have been packaged in DIDL wrappers and ingested into the repository. While many of these datasets are straightforward A&I records, other structures and datatypes, such as complex citation structures and full-text (PDF, HTML, SGML) manifestations, have been added as well.

In this tutorial we will provide an overview of MPEG-21 DID specification and discuss the questions to consider when creating a DID structure for bibliographic data, intellectual issues, and expansion of the DID for non-bibliographic data. In addition, we will walk through the process of creating DID models for several datatypes.

Presenter - Frances Knudson - Los Alamos National Laboratory - Research Library

Frances has worked at the LANL (Los Alamos National Laboratory) Research Library for over 15 years - moving from cataloging, reference, database systems, LWW team, to the Repository Team. LWW projects included LinkSeeker (SFX), MyLibrary, XML databases (conversion of data to MARC XML and testing). She has presented talks at several SLA (Special Libraries Association) annual meetings on ejournals and LinkSeeker. Currently, her projects are focused exclusively on the library's repository.


Anyone interested in creating MPEG 21 DIDL packages.


The events will take place at The Watershed in the historic city of Bristol. The Watershed is situated overlooking the floating harbour in the centre of the City.

The City of Bristol is well situated with good transport links including close proximity to three motorways, two train stations and an international airport with direct flights throughout Europe. For further information on the City of Bristol please visit:

Travel and Accommodation

For further information regarding travel and local accommodation please go to travel and accommodation

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Page last revised on: 29-Jan-2007
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