Palying dvdz on ps2?

hey i have a v12 ps2 scph-70012! its modded but i dun know which chip is it! n it plays sum ov da dvd movies which i play on it but on sum ov it gives an error TV SYSTEM DOESNT MATCH! does sum1 knows any proper solution 4 it??

So your DVD neXt Copy backups won’t play? I am not to familiar with modded PS2’s.