HarmonyOS Video组件初始化展示为黑色，能否设置为透明

@Entry  
@Component  
struct VideoPage {  
  @State isVisibile:Visibility=Visibility.Hidden  
  
  build() {  
    Row() {  
      Column() {  
        Video({  
          src: 'https://img.mcd.cn/cms/images/e3fa083cab2a0851.mp4'  
        })  
          .visibility(this.isVisibile)  
          .autoPlay(true)  
          .loop(true)  
          .controls(false)  
          .width('100%')  
          .height('200vp')  
          .onPrepared(() => {  
            setTimeout(()=>{//或在onStart中设置此段代码  
              this.isVisibile=Visibility.Visible  
            },150)  
          })  
      }  
      .width('100%')  
    }  
    .height('100%')  
  }  
}  
  
@Entry  
@Component  
struct VideoPage {  
  @State isVisibile:Visibility=Visibility.Hidden  
  controller: VideoController = new VideoController()  
  build() {  
    Row() {  
      Column() {  
        Video({  
          src: 'xxx',  
          controller: this.controller  
        })  
          .visibility(this.isVisibile)  
          .autoPlay(true)  
          .loop(true)  
          .controls(false)  
          .width('100%')  
          .height('200vp')  
          .onStart(() => {  
            setTimeout(()=>{  
              this.controller.setCurrentTime(1,SeekMode.PreviousKeyframe)  
              this.isVisibile=Visibility.Visible  
            },150)  
          })  
      }  
      .width('100%')  
    }  
    .height('100%')  
  }  
}