Viz Engine Administrator Guide

Version 3.13 | Published March 28, 2019 ©

Video Output

Use the Video Output section to configure special settings for video output, such as SPG settings and so on.

Note: The VGA version of Viz Engine does not have this section.

Video Output Properties (1)


  • Show Video Output Config. Editor: Opens the Video Output Editor (2). You can also open the Video Output Editor by pressing ALT + V.

  • Video wall/Multi-display: Sets the main output to the Digital Visual Interface (DVI).

    Important: For videowall setups, this setting must be active and the output format must be set to FULLSCREEN.

  • Streaming Output: Activates or deactivates IP Streaming output.

  • Render preview default setting: Sets the default value for the Preview button (see Control Buttons ) when Viz Engine is in On Air mode.

    • Inactive: Renders only video out signals. This increases performance, as the renderer does not have to render into an editor on-screen and into pixel buffer.

    • Active: Renders both video out signals and on-screen (this decreases performance).

    • Fullscreen: Sets the On Air window to screen size.

Video Output Editor

The Video Output Editor defines the synchronization standard and the output signal phases.


  • Freerun: Locks Viz Engine to a clock signal on the video board.

  • Blackburst: Locks Viz Engine to a Blackburst GenLock signal.

  • Tri-level: Locks Viz Engine to a Tri-Level GenLock signal.

  • Auto: Auto detects the genlock signal and locks to it.

  • Digital Input 1 and 2: Locks Viz Engine to the signal on Input 1 or 2.

  • PTP: Uses a Precision Time Protocol source for synchronizing. Mainly used in IP networks.

  • H-Phase and V-Phase: Shifts the output signal with respect to the sync signal.

    Note: The Auto option is only available on Matrox boards . On Matrox boards the h- and v-phase settings are updated automatically as well.

To Make the V- and H-Phase Values Coincide

  1. Set the V-phase value

    • The V-granularity is taken from the genlock.

    • The V-delay is calculated from V-phase * V-granularity.

    • The genlock is set with this V-delay.

  2. Set the H-phase value. Note that there is a distinction whether the H-phase is a positive or a negative value.

    1. If the H-phase > 0

    • The genlock H-delay is set to 0.

    • The H-granularity is taken from the video out channel.

    • The H-delay is calculated from H-phase * H-granularity.

    • The fill and key channels are set with this H-delay.

    1. If the H-phase <=0

    • The fill and key channel H-delay is set to 0.

    • The H-granularity is taken from the genlock.

    • The H-delay is calculated from - H-phase * H-granularity.

    • The genlock is set with this H-delay.

      Note: The granularity and possible min/max values are printed to the Viz Artist/Engine console during startup.

It should be taken into account that when the genlock video format is different from the fill/key video format the value of the V-delay matches the genlock lines and not the video output lines. The same applies to negative H-phase values.

See Also