title: AVCaptureSession startRunning is unmuting device
body: <p>My application has various sound effects for buttons and other actions, if the device is muted/silenced they don't make sounds as expected. However, one of the screens does video recording, and if that screen is navigated to it enables all of the sound effects everywhere in the app. By commenting out some things I determined that it was the startRunning function that does this - I'm not sure if this is just normal behavior because starting the camera enables related things, like audio, or if there's something weird going on that I can change.</p>