<window id="5888">
    <controls>
        <!-- Fallback background for non-standard skins -->
        <!-- 背景，改为透明以显示视频，修复PGS缩放裁剪问题 -->
        <control type="videowindow">
            <left>0</left>
            <top>0</top>
            <width>100%</width>
            <height>100%</height>
            <visible>Player.HasVideo</visible>
        </control>
    </controls>
</window>