title: QMediaplayer duration is wrong
body: <p>I'm developing a video player using Qmediaplayer.
  when I set a label to show duration of a video it display wrong value.</p>
  
  <pre><code>float duration = mediaPlayer.duration() / 1000.0f;
  ui-&gt;lblDuration-&gt;setText(QDateTime::fromTime_t(duration).toString("hh:mm:ss"));
  </code></pre>
  
  <p>If I play a video where duration is 7 minutes 24 seconds label shows "05:37:24"
  There is 5 hours and 30 minutes are added to the label and I can't find a reason.
  Please  help me on this guys...</p>