title: How to remove AVPlayer/AVPlayerItem properly?
body: <p>I am getting alert message "Cannot Decode. Decoder required for this media is busy." when trying to play a video file fifth time in application.
  After searching I found  <a href="https://stackoverflow.com/questions/8608570/avplayeritem-fails-with-avstatusfailed-and-error-code-cannot-decode">AVPlayerItem fails with AVStatusFailed and error code &quot;Cannot Decode&quot;</a>, which says only 4 players canbe initialized in iOS. But I am playing only one player at a time. I am releasing player object and recreating for another play and it displays alert on fifth play.</p>