会议过程如何实现ppt视频播放、暂停状态同步

官方提供的会议场景示例，这个场景如何实现ppt视频播放、暂停状态同步。我使用该示例的demo，反反复复测试就是实现不了ppt中视频播放状态的同步.demo 中同步视频播放状态执行的是如下api，即 SetMediaObj().

case this.optionType.SLIDEMEDIACHANGED.name: 
        await this.wpsApplication.ActivePresentation.SlideShowWindow.View.SetMediaObj({ Data: optionInfo.value.Data });
	break;

如上示例中完整代码如下

// 演示对象
export class Presentation {
  cacheInfo = {}; // 文档操作缓存
  optionType = {
    SLIDESHOWONNEXT: { name: 'SlideShowOnNext' }, // 播放模式下一步触发
    SLIDESHOWONPREVIOUS: { name: 'SlideShowOnPrevious' }, // 播放模式上一步触发
    SLIDEMEDIACHANGED: { name: 'SlideMediaChanged' }, // 视频播放状态改变时触发
    SLIDEPLAYERCHANGE: { name: 'SlidePlayerChange' }, // 播放状态改变时触发
    SLIDELASERPENINKPOINTSCHANGED: { name: 'SlideLaserPenInkPointsChanged' }, // 发送激光笔的墨迹
    SLIDESHOWBEGIN: { name: 'SlideShowBegin' }, // 进入播放
    SLIDESHOWEND: { name: 'SlideShowEnd' }, // 退出播放
    SLIDEINKVISIBLE: { name: 'SlideInkVisible' }, // 是否显示标注
    SLIDEINKTOOLBARVISIBLE: { name: 'SlideInkToolbarVisible' }, // 是否使用激光笔和标注
    SLIDESELECTIONCHANGED: { name: 'SlideSelectionChanged' } // 文档选中切换,非播放模式下文档同步
  };

  constructor(wsServer = {}, meetingInfo = {}, wpsApplication) {
    this.wsServer = wsServer;
    this.meetingInfo = meetingInfo;
    this.wpsApplication = wpsApplication;
  }

  // 初始化主讲人演示事件监听
  speakerInit() {
    Object.keys(this.optionType).forEach((key) => {
      this.wpsApplication.Sub[this.optionType[key].name] = async (e) => {
        this.postMessage({ type: this.optionType[key].name, value: e });
        this.cacheInfo[this.optionType[key].name] = e;
        // 播放模式隐藏右键菜单\hover\链接
        if (this.optionType[key].name === this.optionType.SLIDESHOWBEGIN.name) {
          delete this.cacheInfo[this.optionType.SLIDESHOWEND.name];
          await this._setMenusVisible(false);
        } else if (this.optionType[key].name === this.optionType.SLIDESHOWEND.name) {
          delete this.cacheInfo[this.optionType.SLIDESHOWBEGIN.name];
          await this._setMenusVisible(true);
        }
      };
    });
  }

  /**
   * 主讲人初始化消息推送至听众
   * @param isPlay 是否开启播放模式
   */
  async sendInitInfo(isPlay) {
    // 演示文档初始化后自动进入播放模式
    const params = {};
    if (isPlay) {
      params[this.optionType.SLIDESHOWBEGIN.name] = {};
      this.cacheInfo[this.optionType.SLIDESHOWBEGIN.name] = {};
      await this.wpsApplication.ActivePresentation.SlideShowSettings.Run();
    }

    // 除页面页码、动画设置外，其它初始化根据缓存设置
    const filterKey = [
      this.optionType.SLIDESHOWONNEXT.name,
      this.optionType.SLIDESHOWONPREVIOUS.name,
      this.optionType.SLIDEPLAYERCHANGE.name
    ];
    Object.keys(this.cacheInfo).forEach(key => {
      if (filterKey.indexOf(key) < 0) {
        params[key] = this.cacheInfo[key];
      }
    });
    this.postMessage({ type: 'init', value: params });
  }

  // 初始化听众响应操作
  async listenerInit(optionInfo) {
    switch (optionInfo.type) {
      case this.optionType.SLIDESHOWONNEXT.name: {
        await this.wpsApplication.ActivePresentation.SlideShowWindow.View.GotoNextClick();
        break;
      }
      case this.optionType.SLIDESHOWONPREVIOUS.name: {
        await this.wpsApplication.ActivePresentation.SlideShowWindow.View.GotoPreClick();
        break;
      }
      case this.optionType.SLIDEPLAYERCHANGE.name: {
        if (optionInfo.value.Data.action === 'switchTo' || optionInfo.value.Data.action === 'effectFinish' || optionInfo.value.Data.action === 'changeMediaPlay' || optionInfo.value.Data.action === 'trigger') {
          this._setPageAndAnimate(optionInfo);
        }
        break;
      }
      case this.optionType.SLIDESHOWBEGIN.name:
        await this.wpsApplication.ActivePresentation.SlideShowSettings.Run();
        await this._setMenusVisible(false);
        break;
      case this.optionType.SLIDESHOWEND.name:
        await this.wpsApplication.ActivePresentation.SlideShowWindow.View.Exit();
        await this._setMenusVisible(true);
        break;
      case this.optionType.SLIDESELECTIONCHANGED.name: {
        const playMode = await this.wpsApplication.ActivePresentation.SlideShowWindow.View.State;
        if (playMode !== 'play') {
          await this.wpsApplication.ActivePresentation.SlideShowWindow.View.GotoSlide(optionInfo.value);
        }
        break;
      }
      case this.optionType.SLIDEINKVISIBLE.name:
        this.wpsApplication.ActivePresentation.SlideShowWindow.View.PointerVisible = optionInfo.value.Data.showmark;
        break;
      case this.optionType.SLIDELASERPENINKPOINTSCHANGED.name:
        // 当监听到激光笔的墨迹事件时拿到回调数据后直接调用
        await this.wpsApplication.ActivePresentation.SlideShowWindow.View.SetLaserPenData({ Data: optionInfo.value.Data });
        break;
      case this.optionType.SLIDEINKTOOLBARVISIBLE.name:
        this.wpsApplication.ActivePresentation.SlideShowWindow.View.MarkerEditVisible = optionInfo.value.Data.show;
        break;
      case this.optionType.SLIDEMEDIACHANGED.name: // 视频播放状态改变
        await this.wpsApplication.ActivePresentation.SlideShowWindow.View.SetMediaObj({ Data: optionInfo.value.Data });
        break;
      default:
        break;
    }
  }

  /**
   * 消息推送
   * @param data 推送信息
   */
  postMessage = (data) => {
    const { meetId, id } = this.meetingInfo;
    const params = JSON.stringify({ id: id, meetId, data });
    this.wsServer.send(params);
  }

  // 播放设置右键\hover\链接是否显示
  async _setMenusVisible(flag) {
    const linkTip = this.wpsApplication.Enum.PpToolType.pcPlayHoverLink; // hover超链接
    const imageTip = this.wpsApplication.Enum.PpToolType.pcImageHoverTip; // hover 图片
    const menu = this.wpsApplication.Enum.PpToolType.pcPlayingMenu; // 右键菜单
    await this.wpsApplication.ActivePresentation.SlideShowWindow.View.SetToolVisible(linkTip, flag);
    await this.wpsApplication.ActivePresentation.SlideShowWindow.View.SetToolVisible(imageTip, flag);
    await this.wpsApplication.ActivePresentation.SlideShowWindow.View.SetToolVisible(menu, flag);
  }

  /**
   * 设置slide与animate信息同步
   * @param optionInfo 同步信息
   */
  _setPageAndAnimate = async (optionInfo) => {
    try {
      const slideIndex = await this.wpsApplication.ActivePresentation.SlideShowWindow.View.Slide.SlideIndex;
      const clickIndex = await this.wpsApplication.ActivePresentation.SlideShowWindow.View.GetClickIndex();
      if (slideIndex !== optionInfo.value.Data.slideIndex + 1) {
        await this.wpsApplication.ActivePresentation.SlideShowWindow.View.GotoSlide(optionInfo.value.Data.slideIndex + 1);
      }
      if (clickIndex !== optionInfo.value.Data.animateIndex + 1) {
        await this.wpsApplication.ActivePresentation.SlideShowWindow.View.GotoClick(optionInfo.value.Data.animateIndex + 2);
      }
    } catch (e) {
      console.error(e);
    }
  }
}

请提供能同步 ppt 视频播放状态的api和实现逻辑。感谢感谢！