Scene3D and VideoOutput crash in QML

canlx

Hi all,
I am doing an application. There is an integration between Scene3D and MediaPlayer
Scene3D {
        id: grid
        width: parent.width
        height: parent.height
        cameraAspectRatioMode: Scene3D.AutomaticAspectRatio
      ....................................

Rectangle {
                    anchors.fill: parent
                    color: 'transparent'
                }
                Item {
                    width: 640
                    height: 480

MediaPlayer {
                        id: player
                        source: "file: /// C: /Users/public.CPP00128252D/Desktop/HUD3D_Custom/Video/NPB.avi"
                    }

VideoOutput {
                        anchors.fill: parent
                        source: player
                    }

Component.onCompleted: {
                        player.play ();
                    }
                }
However, every time I run the program crashed. I do not know the cause and solution. Look forward to the help of everyone.
Thank you