Matt is probably the one to ask because it has been a long time, but I believe it is looking for the snapshot url. That is probably buried somewhere in the device manual. It looks like this;
http://192.168.0.126/cgi-bin/api.cgi?cmd=Snap&channel=0&rs=wuuPhkmUCeI9WG7C&user=youruserid&password=yourpswd. Put in your IP, user (admin is default) and pswd. IIRC the wuuPhkmUCeI9WG7C is just random 16 numbers and letters (ok to reuse). The test is that should work in your browser.
EDIT: Read this post IP Camera: No Stream, no motion detection, but warnings in logfile - Add-ons / Bindings - openHAB Community