Capturing my game as a video?

Hi,

I have a multiplayer game made in flash. In future, I wil probably have tournaments and stuff in the game too. Now what i wanna do is be able to capture a game in some sort of a video (maybe FLV) and save it onto my server. Any idea, how i can do that? i know there are video capturing softwares that capture the whole screen and save it to ur disk as a video, but is there some way to save the stuff happening in an interactive swf (only) as a swf/flv/video and save it to my server?

Best Regards
Ali Kapadia