Recording Shared Desktop and Webcam

Question

I want to save published streams on my application server, so I can use the videos to create a webcast presentation later.

Could you please give me some directions to do this? Thanks in advance.

P.S. I may be sounded like I already have an application up and runnning, but I don't. I'm at the planning phase at the moment and trying to decide what/which technology to use.