Now I\'m testing ARKit/SceneKit implementation. The basic rendering to the screen is kinda working so then I wanna try recording what I see on the screen into a video.
If you can keep your device connected to your Mac, it is really easy to just use QuickTime Player to record screen (and sound) from your iOS device.
In QuickTime choose new Movie Recording in the File menu, then in the record dialog near the big red record button there is a little dropdown arrow, where you can pick audio input and video input. Choose your i-device there and you're set to go.