i burned my dvd using dvd decrypter and have this problem

after ripping the ISO from the dvd using dvd decrypter, and burning the ISO using dvd decrypter or NERO, my dvd would play without any problems during the first half of the dvd movie, any spot at the second half, it would give me an error message saying that the dvd is corrupted

any ways to get around this? i've tried it on 4 dvds already, all giving me the same problem