No, there is no generic IP cam binding, nor a specific brand binding. Except Netatmo. There is an existing binding, but the Welcome-camera from Netatmo is a “special kind” of camera. And (AFAIK), it isn’t already implemented in the binding. It’s no classic IP-camera.
Foscam is quite often mentioned here. Myself, I am using an INSTAR camera, which works very good with OpenHAB. Instar is quite popular here in Germany.
The most important thing: The camera must be accessible through CGI-commands. Then openhab can talk to the camera using the http binding. And the camera must support MJPEG. Otherwise the video stream could not be handled by OH.