HarmonyOS如何自定义视频组件样式

// xxx.ets 
@Entry@Componentstruct VideoCreateComponent { 
  @State videoSrc: Resource = $rawfile('video1.mp4') 
  @State previewUri: Resource = $r('app.media.poster1') 
  @State curRate: PlaybackSpeed = PlaybackSpeed.Speed_Forward_1_00_X 
  @State isAutoPlay: boolean = false 
  @State showControls: boolean = true 
  controller: VideoController = new VideoController() 
  build() { 
    Column() { 
      Video({ 
        src: this.videoSrc, 
        previewUri: this.previewUri, 
        currentProgressRate: this.curRate, 
        controller: this.controller 
      }).width('100%').height(600) 
        .autoPlay(this.isAutoPlay) 
        .controls(this.showControls) 
        .onStart(() => { 
          console.info('onStart') 
        }) 
        .onPause(() => { 
          console.info('onPause') 
        }) 
        .onFinish(() => { 
          console.info('onFinish') 
        }) 
        .onError(() => { 
          console.info('onError') 
        }) 
        .onPrepared((e) => { 
          console.info('onPrepared is ' + e.duration) 
        }) 
        .onSeeking((e) => { 
          console.info('onSeeking is ' + e.time) 
        }) 
        .onSeeked((e) => { 
          console.info('onSeeked is ' + e.time) 
        }) 
        .onUpdate((e) => { 
          console.info('onUpdate is ' + e.time) 
        }) 
      Row() { 
        Button('src').onClick(() => { 
          this.videoSrc = $rawfile('video2.mp4') // 切换视频源 
        }).margin(5) 
        Button('previewUri').onClick(() => { 
          this.previewUri = $r('app.media.poster2') // 切换视频预览海报 
        }).margin(5) 
        Button('controls').onClick(() => { 
          this.showControls = !this.showControls // 切换是否显示视频控制栏 
        }).margin(5) 
      } 
      Row() { 
        Button('start').onClick(() => { 
          this.controller.start() // 开始播放 
        }).margin(5) 
        Button('pause').onClick(() => { 
          this.controller.pause() // 暂停播放 
        }).margin(5) 
        Button('stop').onClick(() => { 
          this.controller.stop() // 结束播放 
        }).margin(5) 
        Button('setTime').onClick(() => { 
          this.controller.setCurrentTime(10, SeekMode.Accurate) // 精准跳转到视频的10s位置 
        }).margin(5) 
      } 
      Row() { 
        Button('rate 0.75').onClick(() => { 
          this.curRate = PlaybackSpeed.Speed_Forward_0_75_X // 0.75倍速播放 
        }).margin(5) 
        Button('rate 1').onClick(() => { 
          this.curRate = PlaybackSpeed.Speed_Forward_1_00_X // 原倍速播放 
        }).margin(5) 
        Button('rate 2').onClick(() => { 
          this.curRate = PlaybackSpeed.Speed_Forward_2_00_X // 2倍速播放 
        }).margin(5) 
      } 
    } 
  }}