Step 1: Plug In Your External Device
Connect your external webcam and/or microphone to your computer.
Make sure the device is detected by your operating system.
Step 2: Start Webcast and Choose Devices
Once publishing has started, click the Camera icon in the Chrome address bar
In the pop-up that appears, use the dropdowns to:
Select your external webcam (if multiple cameras are connected)
Select your external microphone
These settings can be changed anytime while the stream is live.
You must allow the devices to be used, if trying to connect an external webcam as per below screenshot.
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