HarmonyOS H265视频无法播放

import abilityAccessCtrl from '@ohos.abilityAccessCtrl';
import { BusinessError } from '@ohos.base';
import common from '@ohos.app.ability.common';

@Entry
@Component
struct Index {
  @State message: string = 'Hello World';

  build() {
    RelativeContainer() {
      // 显示消息的文本组件
      Text(this.message)
        .id('HelloWorld')
        .fontSize(50)
        .fontWeight(FontWeight.Bold)
        .alignRules({
          center: { anchor: '__container__', align: VerticalAlign.Center },
          middle: { anchor: '__container__', align: HorizontalAlign.Center }
        });

      // 使用 Video 组件播放 m3u8 文件
      Video({ src: "xxxx" })
        .id('VideoPlayer')
        .height('100%')
        .width('100%')
        .controls(true) // 显示播放控制
        .alignRules({
          top: { anchor: '__container__', align: VerticalAlign.Top },
          middle: { anchor: '__container__', align: HorizontalAlign.Center }
        });
    }
    .height('100%')
    .width('100%');
  }
}