http://rapidshare.com/files/415620984/mtn_mod.txt

Mind you that there different versions of the mtn.php ... this is mine. Not very clever and hardly usable because it generates thumbs to all the video files in the directory (even if you already made them).

But it works and produces video thumbs (if the correct libraries are installed).

For the switches, see http://moviethumbnail.sourceforge.net/