title: QMediaPlaylist supported formats
body: <p>I'm trying to find a list of supported playlist formats for QMediaPlaylist. But I can't find it in the documentation here <a href="https://doc.qt.io/qt-5/qmediaplaylist.html" rel="nofollow">https://doc.qt.io/qt-5/qmediaplaylist.html</a> or anywhere else. </p>
  
  <p>I would be glad if somebody can point me to where I can find this info. Thank you.</p>