Please be sure you are following this guide:
How to re-stream video from an IP camera (RTSP/RTP re-streaming)
According to the pdf I linked to:
To log in the camera’s setup page, go to SETUP > Network Setup, and select “Static IP Address ”
and assign an IP address to the camera. The IP
address must be in the same subnet mask of the router’s LAN IP.
The camera’s default IP address is 192.168.0.20
So I am not sure, but seems link unless you already changed this the IP should be 192.168.0.20.
Also, I found the D-Link DCS 930L in this list. Not quite the DCS 933L but the RTSP URL would take this form:
rtsp://ip_address/live1.sdp
Kind regards,
Salvadore