More playback problems

[platzUDG]

I have recenlty backed-up a couple of films using MacTheRipper and DVDRemaster. Both films I bought from Europe, so I needed to remove the region coding before I could view them on my region 1 stand alone player. The player loads the disc but the image "tiles" up and down on the screen. I have back-up several films in the past without this difficulty, but this time I am throwing a few new variables into the mix. I am using a new _NEC DVD_RW ND–3520A drive and playing the 8X archived discs on a very inexpensive Desay DVD player that my sister bought us for Christmas. I should mention that the films play flawlessly on my Mac using the regular software player. Any ideas on this problem?