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SMPTE ST 12-2

Transmission of Time Code in the Ancillary Data Space

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Organization: SMPTE
Publication Date: 20 February 2014
Status: active
Page Count: 18
scope:

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

SMPTE ST 12-2
February 20, 2014
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...
ST 12-2 AMD 1
August 29, 2013
Transmission of Time Code in the Ancillary Data Space - Amendment 1
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...
ST 12M-2
February 7, 2008
Television — 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 12M-1 in 8-, 10-, or 12-bit digital television data...

References

This document references:
SMPTE ST 12-1 - Time and Control Code
Published by SMPTE on February 20, 2014
This Standard specifies a time and control code for use in television and accompanying audio systems operating at nominal rates1 of 60, 59.94, 50, 48, 47.95, 30, 29.97, 25, 24, and 23.98 frames per...
This document references:
ITU-R BT.1366 - Time code format definitions and transport in the ancillary data space of a digital television interface according to Recommendations ITU-R BT.656, ITU-R BT.799, ITU-R BT.1120 and ITU-R BT.2077
Published by ITU-R on July 1, 2018
Part 1 of this Recommendation defines a time and control code for use in television, film and accompanying audio systems operating at 60, 59.94, 50, 30, 29.97, 25, 24 and 23.98 frames/s (fps)....
This document references:
ITU-R BT.1700 - Characteristics of composite video signals for conventional analogue television systems
Published by ITU-R on January 1, 2005
A description is not available for this item.
This document references:
SMPTE RP 168 - Definition of Vertical Interval Switching Point for Synchronous Video Switching
Published by SMPTE on July 17, 2009
A description is not available for this item.
This document references:
SMPTE RP 201 - Encoding Film Transfer Information Using Vertical Interval Time Code
Published by SMPTE on November 26, 2008
A description is not available for this item.
This document references:
SMPTE ST 12-1 - Time and Control Code
Published by SMPTE on February 20, 2014
This Standard specifies a time and control code for use in television and accompanying audio systems operating at nominal rates1 of 60, 59.94, 50, 48, 47.95, 30, 29.97, 25, 24, and 23.98 frames per...
This document is referenced by:
SMPTE ST 425-6 - Quad 3 Gb/s Serial Digital Interface for Stereoscopic Image Transport
Published by SMPTE on February 20, 2014
This standard defines a means of transporting stereoscopic images (Left eye and Right eye images) using an interface consisting of pairs of four data streams based on the SMPTE ST 425-3 data...
This document is referenced by:
SMPTE ST 425-3 - Image Format and Ancillary Data Mapping for the Dual Link 3 Gb/s Serial Interface
Published by SMPTE on March 26, 2015
This standard defines 1080-line and 2160-linemapping formats as described below; 1080-line mapping specifies: The mapping of the image formats of 1920 × 1080 and 2048 × 1080 pixels listed in Table 2...
This document is referenced by:
SMPTE ST 2051 - Two-Frame Marker for 48(/1.001)- Hz, 50-Hz, and 60(/1.001)-Hz Progressive Digital Video Signals on 1.5 Gb/s and 3 Gb/s Interfaces
Published by SMPTE on February 20, 2014
This standard defines a Two-Frame Marker for progressive HDTV video formats at 48/1.001(47.95)-Hz, 48-Hz, 50-Hz, 60/1.001(59.94)-Hz, and 60-Hz frame rates. This Two-Frame Marker is multiplexed into...
This document is referenced by:
SMPTE ST 425-5 - Image Format and Ancillary Data Mapping for the Quad Link 3 Gb/s Serial Interface
Published by SMPTE on March 26, 2015
This standard defines the mapping of the image formats of 3840×2160 and 4096×2160 pixels listed in Table 1 into eight parallel 10-bit data streams (known as data stream one, data stream two, data...
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