Dataerror "cyklisk redundanscheck"

I have some DVD-movies I have burned with Liteon 411s, I can play them on my standalone DVD-player, but when I try to copy the movie back to the computer many of them have errors on them.
Any idea why??

for 90% sure you are using cheap low quality media or media that is unsupported by the Lite-On.

Sometimes the disc may still play back (probably with a bit stuttering or small visual picture or sound defects though) in some players.