Elgato Cam Link works great with the macOS QuickTime Player app, but you'll need to know how to select it as an active source.
The following instructions apply to Macs that have a built-in FaceTime camera, which is usually selected by default in QuickTime Player app.
1) Launch QuickTime Player
2) Select "New Movie Recording" from the File menu.
3) Find the circular red button on the screen that initiates recording.
4) To the right of the red button is a ^ symbol. Click on that to reveal a menu that will allow you to select Cam Link as your Camera, Microphone, or both. You can also choose your Quality level - select either High or Maximum.
The following instructions apply to Macs that have a built-in FaceTime camera, which is usually selected by default in QuickTime Player app.
1) Launch QuickTime Player
2) Select "New Movie Recording" from the File menu.
3) Find the circular red button on the screen that initiates recording.
4) To the right of the red button is a ^ symbol. Click on that to reveal a menu that will allow you to select Cam Link as your Camera, Microphone, or both. You can also choose your Quality level - select either High or Maximum.