100% CPU with 6 x Samsung SND-6013 cams

[Henrik]

The trick is to find the correct URL. Test this.
Go to tab Custom URL.
stream type is MJPEG
Address is http://username:password@cameraIP/video?submenu=mjpg
or
http://username:password@cameraIP/cgi-bin/video.cgi?msubmenu=jpg