Long story short, someone kindly hinted that it was a bit tricky to set up their stream with the gaze overlay so we tried it out ourselves and figured out a way of doing it. So here we are!
So the ideal set up will look like something similar to the image below.
For information on how to do the general set up for using two computers to broadcast, check out Twitch's awesome tutorial Broadcasting with two computers.
You need to run and record the Tobii Ghost on your Streaming PC so that your recording or broadcasting software picks it up. But mount your eye tracker on your gaming screen.
To calibrate you can simply use the second screen input such as HDMI2 on your Gaming screen and temporarily switch over to that input just to have the calibration done on your Streaming PC but optimized for your gaming screen.
If your screen only has one input, you will have to connect the inputs to an HDMI switch. To avoid losing one input while using the other input, you will also need an HDMI EDID emulator which allows for both male and female connectors.
- Connect your Tobii Eye Tracker to your Streaming PC.
- Install Tobii Eye Tracking on your Streaming PC.
- Install Tobii Ghost on your Streaming PC.
- Mount your eye tracker on the Gaming screen.
- To calibrate, please connect an HDMI or such to a secondary input on your Gaming screen and then calibrate.
- Once calibrated change the source input on your Gaming screen to your Gaming PC input.
- Now you just need to set up Tobii Ghost in your recording or broadcasting software.
Please note that your gaming screen and the streaming screen should be set to the same resolution and DPI though.