Cannot select built-in camera on iMac
Whenever I have to go to a videoconference hosted through the browser (like GoogleMeet or Theranest), Firefox asks me to choose a camera, but it doesn't allow me to choose the built-in FaceTime camera on my iMac. The only option it offers is EpocCam, which I have installed on my phone but never use. (I've attached a screenshot so you can see that I can't choose any other camera – it just doesn't give me the option!) I must have selected EpocCam once several months ago, but I cannot figure out how to get rid of it as an option on Firefox and I can't choose the built-in camera. I've searched for hours to find a solution but can't figure out how to deal with this. I don't have a similar problem on Safari, which is the only other browser I have installed at this point; and I don't want to migrate all my stuff to a new browser just because of this presumably easy-to-solve problem. Help!