Seems like your Safari browser is refusing to reveal your available devices’ detailed info.
Correct. That’s been my point all along. I concede that the version which you gave the poster is the most reliable for other browsers; it’s the only version that I have seen which will reliably turn on two cameras at the same time. Before this thread I always thought that you had to turn them on one by one, but I see now that if you have the id of each camera (ie a complete array) it’s possible to fire more than one at a time. At any rate, none of us can change Safari so we probably have better ways to spend our time. I just wish someone other than me could confirm or deny these findings. But for now it’s been fun. Thanks for your input.