SMPTE RDD 8:2008

Abtract:

Free TV Operational Practice OP-47 describes the technical/operational practices associated with the storage and distribution of closed caption/subtitling data in the vertical ancillary space of the 10-bit serial HD-SDI signal complying with ITU-R BT.1120-7. — NOTE – This document does not deal with the technical specifications of the actual closed captions/subtitles. It is intended to ensure that closed captioned/subtitled high-definition program material, in accordance with the appropriate Australian and international standards, will be successfully delivered to end users via the broadcasters' storage and distribution processes. — Additional to storage and distribution of subtitles, this operational practice describes the use of other ancillary data such as wide screen signaling (WSS) information via a multi-packet solution.