flv security

I made a page with a subpage that is password protected.

I embedded an flv using a player plugin to that subpage(works great).

Now that I have the subpage secure and the video working on that page.

I just need to find a way so the video will not be vulnerable to anyone that wants to just download it from the server.

I need this video to be secure. I am unfamiliar with server security.

Maybe this is something that can be secured thru my page server?

Please some advice.