Ok. I have a Lite-On 8xDVD burner Dual layer and i have been backing up movies to my HDD and i just started to burn them to DVD's not long ago. The discs im using are 4X+R ones and i have burnt like 10 DVD's so far and only 5 work in my top of the line DVD player and all of them play in the burner. but i also have a Lite-On CD\DVD-ROM Combo and the movies that dont work in the DVD player dont work in this drive either and the ones that do work in the DVD player do work in this drive. I dont think that is is the disc's but they are cheap ones. also what is the better format to burn movies for playback in all or most DVD players (DVD+ or DVD-). thanks for the help.