What file extension do I need to burn to a DVD-R so that I can put it in a television of a normal DVD player to play? I made a video for a school and I need it to play on the DVD player for my class. I don't know what file extension I need, Like, is it an .avi .wmv .mpeg2 I don't know.. there are 50 different files to choose from and I don't have the patiece to list them all. any help would be great. thanks!