Use Unreal Live Link

Pixotope supports Live Link so you can maintain your existing Unreal Engine tracking workflow.

Live Link is a service to get animation data from external sources into the Unreal Engine.

For more information about Live Link check their documentation → https://dev.epicgames.com/documentation/en-us/unreal-engine/live-link-in-unreal-engine

Each Live Link tracking input can be different. We expect them to be similar to Unreal’s FreeD example.

Setting up Live Link inside Pixotope is a 2 step process:

Set up Live Link in Editor

Create a Live Link tracked camera

1. Add a Cine Camera Actor from the Place Actors > Cinematic panel

Add a Live Link Controller component

This component gets the Live Link Tracked Camera transform and applies them to Pixotope’s Tracked Camera.

1. Select the Cine Camera Actor and click "+ Add" in the Details panel

   

2. Search for "Live Link Controller" and click it

   

3. Select the Subject Representation to choose which Live Link Subject drives the camera

   

For information about how to

• set up Live Link Sources and Subjects → Unreal Live Link

• save Live Link Sources as Presets and access them via Blueprints → Unreal Live Link Presets

Add a Lens component

This component gets the lens distortion and applies it to Pixotope’s Tracked Camera.

1. Select the Cine Camera Actor and click "+ Add" in the Details panel

2. Search for "Lens" and click it

   

3. Select the lens file or other distortion parameters as needed

Import ULens files

1. Enable the Camera Calibration plugin and restart Pixotope Editor

   

2. Drag ULens files into the content browser

Configure Live Link in Director

1. Click on "Add a camera system" in SETUP > Configure > Camera tracking

2. Set the Camera tracking protocol to "Unreal Live Link”

3. Select the "Cine Camera Actor" in the Link to live link stream dropdown

   • This tells Pixotope which Unreal camera to copy settings from

     

Ensure that the video is genlocked to avoid jittery tracking data.
Learn more about how to Set up Genlock

Calibrate tracking and delay in Editor

Calibrating tracking and delay need to be done inside Live Link or the Live Link plugin you are using.