BobS0327 on URL streaming question

I have a Dahua 8 channel DVR and I'm trying to stream one of the channels to a web page using the following URL..

 "http://XXX.XXX.XXX.XXX:9876/cgi-bin/mjpg/video.cgi?channel=2"

But I get a Authentication Required Dialog Box indicating that a username and password are being requested by http://XXX.XXX.XXX.XXX.  The site says "Device_CGI"

IOW, I'm prompted for a username and password.

So, my question is, how do I enter a user name and password in the URL string in order to eliminate this password dialog box?

I put the URL string in quotes so that whole string would be displayed in message.