Wow, I'm a native English speaker and this is a new word for me! For anybody who is learning English, I would just like to add that I have never, ever heard this word before. If I wanted to say "make it into a movie," I would say just that. For "they filmatized the book" I would say "they turned the book into a movie." And if I heard "they fimatized the book" before I read this thread, I would have not have understood. Hope this helps.