title: Remove audio from a video file
body: <p>I'm trying to remove the audio track from a MOV type video in my phone's library. I know I can mute the audio on playback, but I plan to upload user videos and it would just make sense to take the audio out and reduce file size.</p>
  
  <p>I've tried converting obj-c code from <strong><a href="https://stackoverflow.com/questions/33100284/ios-remove-audio-from-video" title="this code">THIS ANSWER</a></strong> to swift, but I either messed up with conversion or it just doesn't take out the audio from the file.</p>
  
  <p>Any help would be greatly appreciated.</p>