Make RTSP stream appear as webcam device?

[gswd]

I have a live RTSP stream that I can open through VLC. Is there any possible way to use VLC to make this stream appear as a local webcam device on my Win7 computer?

Details: I have a nurse simulation software that records a web camera in conjunction with the simulation events, but it only records webcams. However the camera I need to use will be an RTSP stream. I'd like to somehow use my RTSP stream in a program that will only take a local webcam as an input.

Any idea if VLC can help me bridge the two or know another program that can make an RTSP stream appear as a webcam device. Or an alternative idea that may work?

I apologize if this is the wrong forum for this. Would greatly appreciate any ideas.

[Rémi Denis-Courmont]

While it would theoretically be possible, it is not implemented. Patch welcome.

[MM0TJR]

I had trouble doing exactly this, I ended up using a professional software called VidBlaster which takes a RTSP stream input and makes it available to Windows as a webcam-type device, other SW (in my case Adobe Flash Media Encoder) can then pick up the video as if it was on the local machine.
The good news is that VidBlaster can be used free as a fully functional time unlimited trial, though a small VidBlaster banner across the top left corner of shot.