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Timecode is a time stamp that can be present in video or audio signals to provide timing information (i.e. time and frame number reference). Within a 24-hour period, each frame has its own unique timecode. You can configure the Vicon Lock unit to trigger from a connected video source containing embedded VITC (Vertical Interval Timecode) or a video source in conjunction with LTC (Longitudinal Timecode). You do this using the Vicon application software on the Vicon Vantage host PC.
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The following table shows the international SD and HD video formats supported by Vicon Vantage systems.
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| Format | Description | Variant supported | |
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| EBU (European Broadcasting Union): Based on cameras operating at a multiple of 25 Hz. In Vicon documentation, the term EBU is used interchangeably with the following terms: | |||
| PAL (Phase Alternating Line) | The color standard used in Europe, except France. | PAL 50 2:1 (Interlaced) | |
| SECAM (Sequential Couleur avec Mémoire) | The color standard used in France, the Middle East, and most of Eastern Europe. | SECAM 50 2:1 (Interlaced) | |
| CCIR (Consultative Committee for International Radio) | The black and white standard. | 2:1 (interlaced) | |
| SMPTE (Society of Motion Picture & Television Engineers): Based on cameras operating at a multiple of 29.97 Hz. In Vicon documentation, the term SMPTE is used interchangeably with the following terms: | |||
| NTSC (National Television System Committee) | The color standard used in the United States. | NTSC 59.94 2:1 (Interlaced) | |
| EIA (Electronic Industry Association) | The black and white standard. | 2:1 (interlaced) | |
| HD (High Definition film): Based on cameras operating at a multiple of 24 fps, 23.98 fps, or 30 fps. | |||
| 24 fps | Cameras operating at a multiple of 24 fps | 1920 x 1080 24 1:1 (Progressive) | |
| 23.98 fps | Cameras operating at a multiple of 23.98 fps | 1920 x 1080 23.98 1:1 (Progressive) | |
| 30 fps | Cameras operating at a multiple of 30 fps | 1920 x 1080 30 1:1 (Progressive) | |
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Standard timecode format is:
hh:mm:ss:ff
where:
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hh | = | hours | 00–23 |
mm | = | minutes | 00–59 |
ss | = | seconds | 00–59 |
ff | = | frames | 00–23 for HD (FILM) 00–24 for EBU (PAL/SECAM) 00–29 for SMPTE (NTSC) and HD (30) |
For NTSC, the separator character changes between a colon ( : ) for non-drop frames and a semicolon ( ; ) for drop frames.
The Vicon Vantage system reads the sequential timecode from the selected timecode source and subsequently timestamps the Vicon raw (X2D) data, along with any reference Vicon Vue video (Vue or Bonita), with that of the external timecode. This can then be used to locate a precise reference point for editing your data.
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Timecode triggering
From the Vicon application software on the Vicon Vantage host PC, you can configure Timecode triggering to automatically cause the Vicon Lock unit to start and/or stop data capture based on the timecode.
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