ISO 16684-1:2019

INTERNATIONAL ISO
STANDARD 16684-1
Second edition
2019-04
Graphic technology — Extensible
metadata platform (XMP) —
Part 1:
Data model, serialization and core
properties
Technologie graphique — Spécification de la plate-forme de
métadonnées extensibles (XMP) —
Partie 1: Modèle de données, mise en série et paramètres principaux
Reference number
©
ISO 2019
© ISO 2019
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ii © ISO 2019 – All rights reserved

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Notations. 3
5 Conformance . 3
5.1 General . 3
5.2 Conforming readers . 3
5.3 Conforming writers . 4
5.4 Conforming products . 4
6 Data model . 4
6.1 XMP packets . 4
6.2 XMP names . 5
6.3 XMP value forms . 6
6.3.1 General. 6
6.3.2 Simple values . 6
6.3.3 Structure values . 6
6.3.4 Array values . 7
6.4 Qualifiers . 8
7 Serialization . 8
7.1 General . 8
7.2 Equivalent RDF and XML . 9
7.3 Optional outer XML .10
7.3.1 General.10
7.3.2 XMP packet wrapper .10
7.3.3 x:xmpmeta element .11
7.4 rdf:RDF and r df:Description elements .11
7.5 Simple valued XMP properties .12
7.6 Structure valued XMP properties .13
7.7 Array valued XMP properties .13
7.8 Qualifiers .14
7.9 Equivalent forms of RDF .18
7.9.1 General.18
7.9.2 Allowed equivalent RDF .18
7.9.3 Prohibited equivalent RDF .22
8 Core properties .23
8.1 Overview .23
8.2 Core value types .23
8.2.1 Basic value types .23
8.2.2 Derived value types .24
8.3 Dublin Core namespace .27
8.4 XMP namespace .30
8.5 XMP Rights Management namespace .30
8.6 XMP Media Management namespace .31
8.7 xmpidq namespace .32
Annex A (informative) Document and instance IDs .33
Annex B (informative) Implementation guidance .34
Annex C (informative) RDF parsing information .36
Bibliography .49
iv © ISO 2019 – All rights reserved

Foreword
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electrotechnical standardization.
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described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
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on the ISO list of patent declarations received (see www .iso .org/patents).
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World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso
.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 130, Graphic technology.
This second edition cancels and replaces the first edition (ISO 16684-1:2012), which has been
technically revised.
A list of all parts in the ISO 16684 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
Introduction
This document specifies a standard for the definition, creation, and processing of metadata that can be
applied to a broad range of resource types. The Extensible Metadata Platform (XMP) was introduced
by Adobe Systems Incorporated in 2001 and has since established itself as a critical technology for
improving business efficiency in many industries. The Adobe Systems XMP Specification Part 1
version of July 2010 is the basis for this document. Establishing this document ensures the stability
and longevity of its definitions and encourages broader integration and interoperability of XMP with
existing standards.
Metadata is data that describes the characteristics or properties of a resource. It can be distinguished
from the main content of a resource. For example, for a word processing document, the content includes
the actual text data and formatting information, while the metadata might include properties such as
author, modification date, or copyright status.
Some information could be treated as either content or metadata, depending on context. In general,
metadata is useful without regard for a resource’s
...