[Terry Barnum] “They start the camera recording, take their position and you drive the interview via FaceTime audio/phone call audio, muting when needed?”
No. Your interview is audio only on another device.
It works better if they can have a second person (spouse, etc) change from facetime to camera so they don’t change their positioning.
Their camera holds the media – you can transfer it after the call. This works well when you control the relationship with the on-camera talent. If they are doing you a favor…it’s a bit of an ask because you need them to basically do your job.
There is another solution called “open reel” by a company called Crews Control. We used them last year, but just didn’t use the tool enough to re-up the contract. It’s a live interview at low streaming quality, recording is done locally and then uploaded once you are done recording – it’s slick, but only works internationally in a limited number of countries.