You'll have to be more specific about what types of videos. If these are dvds that you have ripped to the hard drive and now wish to back up onto disks, you'll need something that can handle burning dvd video. I suggest ImgBurn. Follow one of the guides here: http://forum.imgburn.com/index.php?showforum=4
If these are avi files, and your dvd player can handle avi playback, then burn as simple data files.