HarmonyOS 鸿蒙Next视频加载不出来

HarmonyOS 鸿蒙Next视频加载不出来

如图所示为什么我的视频是黑屏，从后端获取的url没问题，网络权限也配置了，并且控制台打印以下错误：

我的视频是放在阿里云上的

我的代码是：

Column() {
  //返回
  Row() {
    Header({title:"运动"})
  }
  //视频
  Column() {
    Video({
      src: this.videoSrc,
      previewUri: this.previewUris,
      currentProgressRate: this.curRate,
      controller: this.controller
    })
      .autoPlay(this.isAutoPlay)
      .controls(this.showControls)
      .height("100%")
  }.height(330)
  // 大标题,最多两行
  Row() {
    Text(this.InMotionInfo.title)
      .textOverflow({ overflow: TextOverflow.Ellipsis })
      .maxLines(2)
      .fontSize(22)
      .fontWeight(500)
  }
  .margin({ top: 30 })
  .justifyContent(FlexAlign.Start)
  // 等级,时长,消耗热量,运动特点
  Row({ space: 25 }) {
    Column() {
      Text(this.InMotionInfo.league)
        .fontColor(Color.Black)
        .fontSize(18)
        .fontWeight(FontWeight.Bold)
      Text(this.InMotionInfo.leagueDescribe)
        .maxLines(1)
        .fontColor('#a9a9a9')
        .fontSize(15)
    }
    .justifyContent(FlexAlign.Start)
    .alignItems(HorizontalAlign.Start)
    .height(30)

    Column() {
      Text("" + this.InMotionInfo.time)
        .fontColor(Color.Black)
        .fontSize(18)
        .fontWeight(FontWeight.Bold)
      Text("分钟")
        .maxLines(1)
        .fontColor('#a9a9a9')
        .fontSize(15)
    }
    .justifyContent(FlexAlign.Start)
    .alignItems(HorizontalAlign.Start)
    .height(30)

    Column() {
      Text(this.InMotionInfo.cal)
        .fontColor(Color.Black)
        .fontSize(18)
        .fontWeight(FontWeight.Bold)
      Text("千卡")
        .maxLines(1)
        .fontColor('#a9a9a9')
        .fontSize(15)
    }
    .alignItems(HorizontalAlign.Start)
    .justifyContent(FlexAlign.Start)
    .height(30)

    Row() {
      Grid() {
        ForEach(this.InMotionInfo.motionFeatures, (item: string, index: number) => {
          GridItem() {
            MotionType({ content: this.InMotionInfo.motionFeatures[index] })
          }
        })
      }
      .rowsTemplate('1fr 1fr')
      .columnsTemplate('1fr 1fr 1fr')
    }
    .borderColor("#a9a9a9")
    .alignItems(VerticalAlign.Center)
    .width(155)
    .height(45)
  }
  .padding(10)
  .width("100%")
  .alignItems(VerticalAlign.Top)
  // 运动详细描述
  Row() {
    Scroll(this.scroller) {
      Text(this.InMotionInfo.text)
        .fontColor('#707070')
        .fontSize(13)
    }
    .height('100%')
  }
  .width("100%")
  .height(170)

  //GO!!!
  Row({ space: 10 }) {
    Button("暂停")
      .width(65)
      .height(40)
      .fontStyle(FontStyle.Italic)
      .fontSize(13)
      .fontWeight(FontWeight.Bolder)
      .backgroundColor("#24c68a")
      .onClick(() => {
        this.controller.pause()
      })
    Button("x0.75")
      .width(70)
      .height(40)
      .fontStyle(FontStyle.Italic)
      .fontSize(13)
      .fontWeight(FontWeight.Bolder)
      .backgroundColor("#24c68a")
      .onClick(() => {
        this.curRate = PlaybackSpeed.Speed_Forward_0_75_X
      })
    Button("G0")
      .width(75)
      .height(75)
      .fontStyle(FontStyle.Italic)
      .fontSize(30)
      .fontWeight(FontWeight.Bolder)
      .backgroundColor("#24c68a")
      .onClick(() => {
        this.controller.start()
        // this.controllerNum = 2
      })
    Button("X1")
      .width(65)
      .height(40)
      .fontStyle(FontStyle.Italic)
      .fontSize(13)
      .fontWeight(FontWeight.Bolder)
      .backgroundColor("#24c68a")
      .onClick(() => {
        this.curRate = PlaybackSpeed.Speed_Forward_1_00_X
      })
    Button("X2")
      .width(65)
      .height(40)
      .fontStyle(FontStyle.Italic)
      .fontSize(13)
      .fontWeight(FontWeight.Bolder)
      .backgroundColor("#24c68a")
      .onClick(() => {
        this.curRate = PlaybackSpeed.Speed_Forward_2_00_X
      })
  }
  .justifyContent(FlexAlign.Center)
  .margin({ top: 20 })
  .width("100%")
  .height(90)
}

请求各位大佬帮助，感激不尽