Is there a way to download videos from a video site without an flv downloader?

[klay]

Okay. So. I downloaded the flv codec for windows media player and it works great. So now i wanna get rid of realplayer. However, i use the included flv downloader quite often. So i was wondering if there was a way to download a video from a website without an flv downloader? I tried going on animefreak.tv and playing a megavideo video, then finding the url in the source code and downloading the file from that url. But all that gave me was the initial button-click-followed-by-ad in a swf. Is there any way to download a video without having to download more software? If its possible through the "view page source" then please let me know. Or if theres some other way to do it, let me know. I dont care if it isnt flv. I just want to be able to get the file. Ill find the codecs later if need be.