When you encounter:
"what I want and I need to do is to burn a series of videos format m4v, that I bought in itunes, on DVD ...the thing is this ... the videos cannot be reproduced in any other pc, mac,or and in any other ipod besides the one of the person which bough the videos... this is because the itunes keys... , to make the conversion will be easy using any tool, or any other of the thousands of converters that exist for video... "
"I also want to enjoy the m4v videos i bought on home dvd player. But, how to burn m4v file to DVD? Help!"
First of all, you need to unlock iTunes M4V files with M4V Converter, and then use Video Converter to burn unprotected M4V files to DVD.