Xbox and PS2 as DVD players

[kurze]

im having trouble with the ps2 playing my dvd movie backups. my very first back up i did works perfectly with both systems. so i thought, great it works on both. i use the xbox as my primary player anyways. just recently i tried a later back up and it wont work for the ps2 but it works without a hitch on the xbox. so i went through all my back ups and only like 3 disks are compatible with both systems. (they were one of the first backups ive done) im new at this and everything i have learned at it this site. im doin Anydvd + CloneDVD2 + Alcohol%120. make the iso then burn it. this is what i ended up with. but i dont remember what i used when i started learning. maybe some ripping demos? i also have nero 6 and record now max (mostly to making ps2 back-ups, record now doesnt seem to like the xbox, nero does ok. when i would use these i would the simple "wizard" (easy) loading) i have version scph-3001 ps2 (flip-top magic boot method, just installed the hard disk so the system got "updated"). the xbox is newer bought it around christmas havent got the time to mod it yet. anyways is there a proven method for making backups that are universal. for both ps2 and xbox? and possibly for set top players also?




thank you in advance - your pupil - tHe kurze