Content Packaging for Complex Objects

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• Content Packaging for Complex Objects
• MPEG 21
• 1 February 2007
• Frances Knudson
• Repository Team
• Los Alamos National Laboratory Research Library
• LA-UR-07-0495

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MPEG 21

• ISO/IEC TR 21000
• MPEG-21 is modular
• Part 1 Vision, Technologies and Strategy
• Part 2 DID Digital Item Declaration
• Part 3 DII Digital Item Identification
• Part 4 IPMP Intellectual Property Management
  and Protection
• Part 5 REL Rights Expression
• Part 6 RDD Rights Data Dictionary
• Part 7 DIA Digital Item Adaptation
• Part 8 MPEG-21 Reference Software
• Part 9 MPEG-21 File Format
• Part 10 DIP Digital Item Processing
• Part 11 Persistent Association Technology
• Part 12 Test Bed for MPEG-21 Resource Delivery
• Part 13 Empty
• Part 14 Conformance
• Part 15 Event Reporting
• Part 16 BF Binary Format

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Core concepts - Digital Item User

• Digital Item a structured digital object with
  a standard representation, identification and
  metadata within the MPEG-21 framework
• User any entity that interacts with or makes
  use of the Digital Items

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MPEG-21 Digital Item Declaration Digital Item
Declaration Language

• Abstract model MPEG-21 DID
• Representation of the model in XML MPEG-21 DIDL
• W3C XML schema of MPEG-21 DIDL

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Digital Object
Type MIME Identifier
Digital Object scholarly paper N/A DOI
Constituent datastream 1 metadata record text/xml PMID
Constituent datastream 2 (inline) fulltext file application/pdf
Constituent datastream 3 (http access) fulltext file application/pdf
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MPEG-21 DID Abstract Data Model basic entities
container grouping of items and/or containers
and descriptor/statement constructs pertaining to
the container
item represents a Digital Item.
Descriptor/statement constructs convey
information about the Digital Item
component binding of descriptor/statements to
datastreams
descriptor/statement
item
resource datastream
descriptor/statement
item
component
component
descriptor/statement
resource
resource
resource
descriptor/statement
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Descriptor/Statement

• Extensible mechanism to convey secondary
  information.
• Statement is a literal textual value that
  contains information but not an asset.
• MPEG 21 presents a formal usage in several of the
  parts
• Identification information MPEG-21 Part 3 DII
• Rights information MPEG-21 Part 5 REL
• Processing information MPEG-21 Part 10 DIP
• User environment information MPEG-21 Part 7
  DIA

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Descriptor/Statement Examples

• ltdidlDescriptorgt
• ltdidlStatement mimeType"text/plain
  charsetutf-8"gt
• This digital object represents a scholarly paper.
• lt/didlStatementgtlt/didlDescriptorgt
• ltdidlDescriptorgt
• ltdidlStatement mimeType"text/xml
  charsetutf-8"gt
• ltdiiIdentifier xmlnsdii"urnmpegmpeg21200201
  -DII-NS"
• xmlnsxsi"http//www.w3.org/2001/XMLSchema-insta
  nce" xsischemaLocation"urnmpegmpeg21200201-D
  II-NS http//standards.iso.org/ittf/PubliclyAvaila
  bleStandards/MPEG-21_schema_files/dii.xsd/dii.xsd"
  gtinfopmid/12456789lt/diiIdentifiergt
• lt/didlStatementgtlt/didlDescriptorgt

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Descriptor/Statement Example

• ltdidlDescriptorgt
• ltdidlStatement mimeType"text/xml
  charsetutf-8"gt
• ltjhjhove xsischemaLocation"http//hul.harvard.e
  du/ois/xml/ns/jhove http//hul.harvard.edu/ois/xml
  /xsd/jhove/1.3/jhove.xsd" name"Jhove"
  release"1.0" date"2005-05-26"gt
• ltjhdategt2006-10-24T074527-0600lt/jhdategt
• ltjhlastModifiedgt2006-08-28T083223-0600lt/jhlas
  tModifiedgt
• ltjhsizegt3492005lt/jhsizegt
• ltjhformatgtPDFlt/jhformatgt
• ltjhversiongt1.4lt/jhversiongt
• ltjhstatusgtWell-Formed and validlt/jhstatusgt
• lt/jhjhovegt
• lt/didlStatementgt.

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DII - Digital Item Identifier MPEG 21 Pt. 3

• Framework for identifying any entity regardless
  of its nature type or granularity
• diiIdentifier
• diiRelatedIdentifier
• _at_relationshipType
• Contained within the descriptor/statement entity

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And there is much more!

• MPEG-21
• Flexible
• Extensible
• Community profiles
• LANL has processed 8 datasets (80 million
  records)
• Uptake has increased aDORe Archive, Fedora
  (plug-in), DSpace (plug-in), Portico, DARE (Dutch
  library), PANIC
• Commercial ventures enkios

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• Thank you
• Questions
• Acknowledgements
• Thanks to the Repository Team Esha Datta, Beth
  Goldsmith, Irma Holtkamp, Laura Robinson and
  Valerie Trujillo
• Thanks to Herbert Van de Sompel and LANL Research
  Library Digital Library Research Prototyping
  Team for the use of their slides
• fknudson_at_lanl.gov