如何在视频QML中显示缓冲区(进度条)

import QtQuick 2.0
import QtMultimedia 5.0

Item {
    width: 800
    height: 600

    Video {
        id: videoPlayer
        source: "video.mp4"
        anchors.fill: parent
    }

    ProgressBar {
        id: bufferProgressBar
        width: parent.width
        height: 10
        value: videoPlayer.bufferProgress * 100
    }

    Binding {
        target: bufferProgressBar
        property: "value"
        value: videoPlayer.bufferProgress * 100
    }

    onStatusChanged: {
        if (videoPlayer.status === MediaPlayer.Buffered) {
            console.log("Video buffered")
        }
    }
}