How to install FFMPEG in PHP to encode video

[bribliorb]

I want to know how this FFMPEG to integrate in php. I want to encode video. I got this link earlier to refer http://youtubeclone.wordpress.com/2007/05/26/how-to-convertencode-files-to-flv-using-ffmpeg-php/but dont know where to point this$ffmpegPath = "/path/to/ffmpeg";$flvtool2Path = "/path/to/flvtool2";here we have to give the path "/path/to/ffmpeg", "/path/to/flvtool2". I am little bit confused what to do or how to integrate ffmpeg, flvtool2 in php