This document defines mean to uniquely identify content (an audiovisual work). It specifies the use of an externally defined identifier, such as ISAN, and it defines an alternative house numbering system. This document also defines the semantics of the use of the MPEG-2 content labeling descriptor for labeling audiovisual content with these identifiers in the ATSC Transport.
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The Advanced Television Systems Committee, Inc., is an international, non-profit organization developing voluntary standards and recommended practices for digital terrestrial broadcasting. ATSC member organizations represent the broadcast, broadcast equipment, motion picture, consumer electronics, computer, cable, satellite, and semiconductor industries. ATSC also develops digital terrestrial broadcasting implementation strategies and supports educational activities on ATSC standards.