How do I Convert iTunes purchased movies to another format?

Tweet

so, I bought the movie yesterday on the iTunes Store, and now he is in the movies library. And now I have pulled the movie from the library on my desktop. I've tried it with Xilisoft converters and super, but there was always an error. How can I do that, I get the movie into another format or better, how do I get up the movie to a DVD so I can play it on your DVD player. PS: The movie has the iTnes Mpeg4 format (m4v)