Help!

I downloaded Star burner to burn dvds but my files arent in the right codec or file type or something to get it to burn them to a dvd…the file is in mp4 i think do i need to download a dvd converter and if so what is the best free one out there?? thanks so much for the help!

oh yea and what file type do they need to be in to burn them to a dvd…the dvds i have are dvd-rw…kinda computer illiterate so any help would be great!

oh yea and its not mp4 its rip dvix i think i dunno i just need a dvd burner/converter that is free and works for all types of files!

just wait, posting three times to your own thread is annoying. someone will answer soon.