string(247) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%88%AA%E5%8F%96%E8%A7%86%E9%A2%91%E7%94%A8%E4%BB%80%E4%B9%88%E5%B7%A5%E5%85%B7 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
截取视频用什么工具
