title: AVFoundation, how to turn off the shutter sound when captureStillImageAsynchronouslyFromConnection?
body: <p>I am trying to capture an image during a live preview from the camera, by AVFoundation <a href="https://developer.apple.com/documentation/avfoundation/avcapturestillimageoutput/1387374-capturestillimageasynchronously" rel="noreferrer">captureStillImageAsynchronouslyFromConnection</a>. So far the program works as expected. However, how can I mute the shutter sound? </p>