Yeah, I got back into video recently and it's pretty surprising that the "multiple video in" isn't a solved problem in 2024! Even recording "clean" video by itself is unexpectedly tricky. The only choice, on a mac at least, appears to be to record directly from the USB device using quicktime.
Seems like a definitely opportunity for someone, although it also looks like Apple are thinking of moving into the space so maybe not.
I ran into so many obscure, incomprehensible issues with OBS I just gave up. I'm sure the other two can also be coerced into doing what you need but Quicktime just works. Maybe things are different on PC.
Seems like a definitely opportunity for someone, although it also looks like Apple are thinking of moving into the space so maybe not.