My brand new Mac has a camera which isn't transmitting. It can see me for FT but no video or sound. Then I opened Photo Booth and the camera AND video don't work. What gives?
From your post we see you are having some trouble with FaceTime not recording audio or video, but the camera working in other apps. We want to help! We recommend first checking to make sure you give FaceTime permission to use your camera: Control access to your camera on Mac. Then test to see if the audio and video still aren't working.
Have a great rest of your day!