title: Encrypt a video file IOS
body: <p>I have an ios application that contains video files in it. I'm concerned about users with
  jailbroken phones being able to rip these videos out of the app.</p>
  
  <p>One of the solutions I thought might work would be to encrypt the videos,
  and save it in library and at the time of playing I would decrypt it and play it ..
  But the problem is since the video are of bigger size , encryption takes a long time .</p>
  
  <p>I am looking for some alternatives.. please help</p>