Working for me with firmware 65192 :
Source type : remote
Remote protocol : HTTP
Remote Method : Simple
Hostnam : DNS or IP (didn't test with authentication)
Remote host path : /mjpeg1?res=full&fps=4
-> you can choose mjpeg1, 2, 3 or 4
-> res can be set to half, you'll need to change Width & Height
-> fps can be higher
Target colorspace : 24
Width : 1600
Height : 1200