Have no idea what was the version of the mencoder on the old host :)
Btw i've enabled flvtool in the miscelious setting in admin panel is that ok?
PS: checking the path with the host at the moment

EDIT: so the paths are correct, version of mencoder: MEncoder 1.0rc2-3.4.2 (C) 2000-2007 MPlayer Team

Thank you