Video not rendered for .mov files in QML MediaPlayer

Window {
    width: 640
    height: 480
    visible: true
    MediaPlayer {
       id: player
       audioOutput: AudioOutput{}
       videoOutput: videoOutput
       source: "sample.MOV"
    }
    VideoOutput{
       id:videoOutput
       anchors.fill:parent
    }
    MouseArea{
     anchors.fill: parent
     onPressed: player.play();
    }
}