Video recording (save to disk) from ip cam

[cyj]

I have a DCS-900. My goal is recording video through the IP cam. I think the progress would be: 1) capture jpeg with "X" fps form IP cam and tranform *.jpg to MJPEG file with "X" fps. Or 2) some way directly record video as MJPEG file.

I think vlc could do that at least one way of them. I really need a "COMPLETE" progress of commands with parameters.

My client (video-saving place) is running Linux. DCS-900 doesn't support rtsp.
It has a http://<ip>/video.cgi interface.
Any help or correctness would be appreciated.
Thanks a lot in advance.

I'll report results if i have any.