[REG] Unable to mute sound before playing a video

audioOutput: AudioOutput { muted: true } // << muted has no effect, sound is still heard

import QtQuick
import QtQuick.Window
import QtMultimedia

Window {
    width: 640
    height: 480
    visible: true

    VideoOutput {
        id: output
        anchors.fill: parent

        MediaPlayer {
            videoOutput: output
            audioOutput: AudioOutput { muted: true } // << muted has no effect, sound is still heard

            // you can use any local or web media source with sound instead
            source: "https://www.learningcontainer.com/wp-content/uploads/2020/05/sample-mp4-file.mp4"
            Component.onCompleted: play()
        }
    }
}