Elgato Cam Link 4K not working

[satchmobronson]

Describe the bug

The app doesn't seem to detect the Elgato Virtual Camera or the direct output from the Cam Link 4K. When I still had a Logitech webcam, it did detect the virtual webcam that creates. The Cam Link (both the virtual camera and the direct output) works fine in other video apps--I can use it in Google Meet, it works in Discord, etc.

To Reproduce

1. Start app
2. Select camera in configuration settings

Expected behavior I would expect to see a preview, but there isn't one. If I click start tracking it just shows "tracking stopped".

Screenshots

N/A

Environment (please complete the following information):

• Operating system version (Windows 10+ Version number): Windows 10 21H2
• Webcam model: Elgato Cam Link 4K (I have a Sony a5100 mirrorless camera plugged into it but the specific camera should be irrelevant)
• AITrack version: 0.7.1

Additional context Add any other context about the problem here.

[satchmobronson]

Weird, for a sanity check I also installed OBS to use its virtual camera (no dice) and plugged my Logitech webcam back in to see if that worked. It didn't, I got the same problem as issue #208, the lights on the Logitech light up for a second to indicate the camera is being used, then turn right back off.

[satchmobronson]

Works now. I did a bunch of stuff--added an exception for Windows Defender, unplugged and replugged the Cam Link, rebooted, etc--and I don't know what fixed it. But it works with Cam Link now.