If you regularly make audio or video calls on your computer, you've seen people appearing out of frame, or hunting for the unmute button, or otherwise trying to get their technical setup ...

You can test your webcam online or using programs that come with Windows 10 or your Mac. You don't have to wait for a video call to find out there's a problem with your webcam — test it ahead of time.

You can turn on the camera on your Mac by opening an app that uses it, such as Zoom or FaceTime. When your Mac camera is on, a green light will be illuminated next to it. If the camera doesn't work in ...