DVD playback problem

[djdoom]

I have tried to back up some DVD movies. However, some of the disks will not play back on the computer using Power DVD. I burn using Nero, and the burning and even verification works OK, but when I try to play back on the computer, I get an error message that the disk might be damaged. Most disks play back on the stand alone player whithout problems. I even found that one of the didks play back on a computer with WinDVD but not PowerDVD. Is there any suggestions what this problem can be due to?

Thanks, DJ

[gooki]

What disc are you using.

What method (applications) do you use in the backup process.

[djdoom]

I use DVD shrink and burn the files using Nero 6.3.0.0. I have used a number of different DVD disks, not well known brands in jewel case however. I am using a Pioneer 106, but have tried Nec 1300 and an external Sony as well, but with the same type of problems.

[samlar]

power dvd does the same thing with my movies so I just use windows media player

[mudda_t]

Is nero burning them in "UDF w/Joliet" or something else? These are file system settings.
also
Are you burning data or dvd video? Dvd video creates VIDEO_TS and AUDIO_TS folders but data doesn't.

[samlar]

I am burning dvds and I am using dvdshrink and copytodvd to make them and for some reason powerdvd does not like them

[samlar]

what is funny is tonight all my burned movies seem to be working. I did go to the site below and update version four of powerdvd.
http://www.gocyberlink.com/english/download/download.jsp

[djdoom]

I am burning the DVD's as Video DVD and in ISO. Lately I have noticed that two of my disks play OK on the computer, but one is without sound and the other without subtitles. Any suggestions?