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About This Item


Full Description

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.

Document History

  1. SMPTE ST 12-2:2014


    Transmission of Time Code in the Ancillary Data Space

    • Most Recent
  2. SMPTE 12M-2-2008

    Television - Transmission of Time Code in the Ancillary Data Space (Revision of RP 188-1999)

    • Historical Version
  3. SMPTE RP 188-1999

    Transmission of Time Code and Control Code in the Ancillary Data Space of a Digital Television Data Stream

    • Historical Version