I\'m actively researching this at the moment, but now that the iPhone 7 Plus has a dual camera system, will AVFoundation allow you to handle video frames from each specific came
In the updated AVFoundation documentation (AVCaptureDeviceType) there're new device types: builtInWideAngleCamera and builtInTelephotoCamera. Hence, it should be possible to create multiple capture sessions and get the feedback from both of them at the same time.