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Calibrate syncing

Depending on your tracking and video pipeline, you can end up with delayed video or tracking data. To avoid CG elements sliding when the camera is panned, tilted or zoomed, we need to synchronize video and tracking data.

Configure frame matching method

  1. Select the frame matching method supported by your system - see available frame matching methods below

  2. For Timecode method

    1. Choose your primary timecode source

    2. Check for incoming timecode

Learn more about how to Configure timecode (LTC)

Available frame matching methods


Buffer size
(no frame matching)

This ensures a stable buffer size by deleting overflow, and by duplicating packets when the buffer size is too low.

  • Requires manual syncing

  • Will cause stuttering when tracking data is unstable


This method uses a timecode source to auto lock video and tracking data.

Tracking data with embedded timecode is currently supported by the following tracking systems:

  • EZtrack

  • Ncam

  • SMT

  • Stype Red Spy

  • TrackMen

  • Technocrane

  • UX v2

The "Primary" timecode source in the machine header is used for auto locking.

Arrival Timestamp

This method is similar to Buffer size, but uses the video and tracking arrival timestamps to handle errors.

Calibrate syncing between video and tracking

  1. Pan the physical camera quickly and stop abruptly

  2. Check to see whether the previously placed calibration cone slips temporarily from the marked point

    • Use the -/+ buttons or the input field to change the delay

If the graphic moves first

If the camera feed moves first

Subtract video delay for the camera

If that is not possible, then add tracking delay

Add video delay for the camera

If that is not possible, then subtract tracking delay

Use the filters on the top of the page to focus on the areas you are working on.

Available delays



Video delay


Delays the video feed/Increases the video buffer size

Tracking delay


Delays the tracking feed/Increases the tracking buffer size

  • Supports separate control of the Transform and Lens delay

  • Supports decreasing the default buffer size*

  • Supports subframe delay

AR set extension


Delays the graphics independently while keeping graphics and tracking and locked*

Engine API


Delays any API call to the engine*

Video delay


Delays the video feed/Increases the video buffer size

  • Supports decreasing the default buffer size*

Audio delay


Delays the audio feed/Increases the audio buffer size

* See Configure and calibrate multi-machine syncing for more details

Separate transform and lens delay

In case the transform and lens data provided by your tracking system is not in sync, you can edit the delays for them separately.

  1. Click on the Break icon to separate tracking and lens delay

  2. Control the tracking and lens delay separately

To unify them, click on one of the icons again.

Calibrate syncing for a multi-machine setup

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