TMPGEnc DVD Author after burn the dvd can't read again

[sleung]

help
Im authoring a DVD movie using TMPGEnc DVD Author 1.6,and burn with my NEC burner. evrything is ok, I can play the movie in my dvd player,looks ok. when I want to make a copy, 9 out of 10 I can't read the dvd with burner i used. it has an error, is the authoring program wrong or my computer system,I use nero 6.
thanks

[mats.hogberg]

It's your media. Happens all the time, not using 1st class discs. Not that big an issue - just keep the ISOs, and write those when you want a 2nd copy (it's faster too, than "ripping" your copy.)

/Mats

[sleung]

mats.hogberg
if kept the iso and AUDIO_TS,VIDEO_TS are same
size,it will take up space in the harddrive.
you think is the media?

[mats.hogberg]

No need to keep ISO and AUDIO_TS/VIDEO_TS folder, since the latter are also inside the former (and can easily be extracted, should need arise). But yes, you have to give up ~4.4 GB for each ISO you put into storage.
Yes, I'm positive it's the media. Try scanning your copy, and I'm sure you'll get read errors.
AFAIK, read errors are similar to how more elaborate recent copy protection schemes work, so if you really really want to backup a copy, try DVDFab Decrypter

/Mats

[sleung]

thanks
than if I use thoae media to keep some files,the files will be lost something?
and I use DVDFab Decrypter is ok, can read the hold DVD but I don't
know it will missing some data after I burn dvd.

[mats.hogberg]

DVDFab Decrypter is fine - and will read every bit that can be read - on bad media some bits simply aren't there. Most rippers will choke on that one missing bit - DVDFab Decrypter has the ability to keep on reading like nothing's wrong - something that other rippers don't. But your missing bit will be gone.

/Mats