视频显示加载失败的原因查询方法
1、按住键盘的win+R，打开对话框![](https://wkrtcs.bdimg.com/rtcs/image?w=413.33&md5sum=2fbd179520f582b846006e9350e19dd6&sign=fc3a63be90&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=441&ipr={"t":"img","r":"r_4","w":"413.33","h":"237.33","dataType":"gif","c":"word/media/image1.gif"})
2、输入cmd，回车，打开cmd窗口
3、输入ping video.edudc.net![](https://wkrtcs.bdimg.com/rtcs/image?w=512.00&md5sum=2fbd179520f582b846006e9350e19dd6&sign=fc3a63be90&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=441&ipr={"t":"img","r":"r_4","w":"512.00","h":"338.67","dataType":"gif","c":"word/media/image2.gif"})
4、如果看到发出去的包都能接收回来，说明网络是通的，这种情况下如果无法看视频，说明视频被禁用了。
5、如果无法接收数据包，显示超时，说明网络不通。
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