微信小程序上传视频
wx.chooseVideo({
sourceType: [‘album’, ‘camera’],
compressed: true,
maxDuration: 10,
camera: ‘back’,
success: res => {
const video = res.tempFilePath;

        this.setData({
          src: res.tempFilePath,
          size: (res.size / (1024 * 1024)).toFixed(2)
        })
        console.log(res.thumbTempFilePath)
     
          })
        }




        // this.upLoadImg(video);
      }
    })

真机不能获取 res.thumbTempFilePath 该怎么解决