getLocalVideo: function () {
    var that = this;
    var session_key = wx.getStorageSync('session_key');
    wx.chooseVideo({
      maxDuration: 10, 
      success: function (res1) {
        console.log(res1);
        app.startOperating("上傳中")
        // 這個就是最終拍攝視訊的臨時路徑了
        var tempFilePath = res1.tempFilePath;
      },
      fail: function () {
        console.error("獲取本地視訊時出錯");
      }
    })
  },