VLC goes through the motions, even prompts for username/password, but is not able to show it. But using HTML in a browser allows you to do it (fill in 2 values, IP-address and SerialNo):
<html>
<body>
<table border=0 >
<tr>
<td align="center">
<APPLET name="cvcs" CODEBASE="http://192.168.x.y/" CODE="xplug.class" WIDTH=640 HEIGHT=480>
<param name="RemotePort" value=80>
<param name="Timeout" value=5000>
<param name="RotateAngle" value=0>
<param name="PreviewFrameRate" value=2>
<param name="DeviceSerialNo" value="PutYourCodeHere">
</APPLET>
</td>
...Repeat above for multiple...
</tr>
</table>
</body>
</html>