ISO/IEC 21000-22:2019

ISO/IEC 21000-22:2019 Information technology - Multimedia framework (MPEG-21) - Part 22: User Description
standard by International Organization for Standardization/International Electrotechnical Commission, 08/01/2019

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Full Description

This document standardizes four data formats: User Description (UD), Context Description (CD), Service Description (SD), and Recommendation Description (RD). This document also specifies technologies related to loudness control and visual expression.