Welcome to the MPEG-21 Rights Data Dictionary Registration Authority

This is the web site of the MPEG-21 Rights Data Dictionary (ISO/IEC 21000-6).

MPEG (ISO/IEC JTC 1/SC 29/WG 11) is a technical working group of ISO/IEC, responsible for the development of standards for coded representation of digital audio and video, including the MPEG-21 Multimedia Framework.

ISO is the International Organisation for Standardisation, based in Geneva. ISO manages a joint technical committee with the International Electrotechnical Commission (IEC), producing technical standards for information technology. MPEG is part of this joint technical committee.

A Rights Data Dictionary is a structured collection of terms for describing usage rights that might be part of the business rules governing content consumption in the digital environment.

The Registration Authority (RA) is the appointed management body for the Dictionary.

MPEG-21 is an open framework for multimedia delivery and consumption, developed under the joint standards framework of the ISO and IEC Joint Technical Committee 1. Two components of the MPEG-21 standards, a Rights Expression Language (ISO/IEC 21000-5) and Rights Data Dictionary (ISO/IEC 21000-6) provide the means for users to express rules about access and use of multimedia content. The REL provides the syntax, and the RDD provides the semantics for the Terms used in the REL.

The RDD comprises two parts:

The ISO/IEC 21000-6 Registration Authority maintains, and makes available, these two sets of Terms via this website. Users of the MPEG-21 standards can register new Terms on this site.

This site is run by the International DOI Foundation, who has been appointed by ISO/IEC JTC1 as the ISO/IEC 21000-6 Registration Authority.