HarmonyOS 启动页播放视频会有一个闪烁

@Entry  
@Component  
struct HeiSebeijing {  
  build() {  
    Row() {  
      Column() {  
        Text('before')  
        VideoComponent({url:'xxx'})  
        Text('after')  
      }  
      .width('100%') }  
    .height('100%') }  
}  
@Component  
struct VideoComponent {  
  @State isVisibile:Visibility=Visibility.Hidden  
  controller: VideoController = new VideoController();  
  private url:string=''  
  build() {  
    Row() {  
      Video({ src: this.url, controller: this.controller })  
        .visibility(this.isVisibile)  
        .autoPlay(true)  
        .loop(true)  
        .controls(false) .width('100%') .height('200vp')  
        .onStart(() => { setTimeout(()=>{ this.isVisibile=Visibility.Visible },100) })  
        .onPrepared(()=>{ this.controller.setCurrentTime(0,SeekMode.NextKeyframe) })  
    }  
  }  
}