title: Edit video using UIVideoEditorController
body: <p>I want to trim video so i am using UIVideoEditorController but when i check can edit file then it return false for all the files, mp4,mov,m4v. So any one will please guide me what is the problem.</p>
  
  <ol>
  <li>Will you please give me the link of any tutorial of using UIVIdeoEditorcontroller</li>
  </ol>