Can't play burned dvd on sony dvp-ns715p

I been trying to burn dvd’s now for awhile,but I can’t play them on my sony dvd dvp-ns715p. My burned dvds play on my computers! Is it the dvd player. Or my hardware for burning.I have sony dvd-rw dw-u10a burner.Also my software is nti cd&dvd maker platinum 6.5 any help would be appreciated.

what media do you use? have you tried sonic recordnow! as this works great for dvd video.

I tried -r dvd and +dvd dics.No luck. I even tried to play the dics on another dvdplayer and still won’t play. But will play on computers. Im at a loss.