ST 12-2:2014 - SMPTE Standard - Transmission of Time Code in the Ancillary Data Space

This standard defines a transmission format for conveyance of linear (LTC) or vertical interval (VITC) time code data formatted according to SMPTE ST 12-1 in 8-, 10-, or 12-bit digital television data interfaces. Time code information is transmitted in the ancillary data space as defined in SMPTE ST 291-1. Multiple time codes can be transmitted within a single digital video data stream. Other information (such as real time clock, film transfer, DTTR tape timer, and user-defined information) may also be carried in the ancillary time code packet. — This standard is applicable to digital television data interfaces, whether high definition or standard definition. — NOTE: This 2014 document is a revision of ST 12-2:2008 incorporating changes published as Amendment ST 12-2:2008 AM1:2013. No further changes have been made.