I want to know if my server supports using ffmpeg or not. If not how to install it on my server.
How to install ffmpeg source code for window (url if its possible ).
I'm guessing because you asked for source for Windows, you are using a Windows based server, in which case chances are it is NOT installed.
There are a couple of places you can get Windows builds from
Zeranoe FFmpeg - Builds
ffmpeg 0.6.1 - VideoHelp.com Downloads
are 2 I've just found.