Posted by Roberto Divia on 08/23/06 14:53

Linea Recta wrote:
> I made a DVD (with Nero 6.3) with the option 'verify' checked. After burning
> 'succesfully' and a lengthy verifying process, I got a message that the DVD
> failed verifying.
> Suspicious as I am by now, I just started using the DVD from beginning to
> end and it seems there's nothing wrong with it.
> The other way round happens also: DVD's which were tested OK in Nero, seemed
> faulty afterwards.
> Conclusion: verifying is useless.

Video DVDs can have errors and still play OK. But the error is there. Video
DVDs have redundant files for the key information and the video stream can
still be decoded having a few wrong bits here and there. It is also
a feature of the player, some do a better job than others. Furthermore,
editing of a corrupted video stream may be problematic, the typical
syndrome is a OOS effect between video and audio.

I think that the error is there but it has been successfully recovered
by your DVD player.

For a data DVD, however, a failed verification is never a good sign...

P.S. Nice cross-posting...

Ciao,
--
Roberto Divia` Love at first sight is one of the greatest
Dep:PH Bat:53 Mailbox:C02110 labour-saving devices the world has ever seen
Route de Meyrin 385 ---------------------------------------------
Case Postale Phone: +41-22-767-4994
CH-1211 Geneve 23 CERN Fax: +41-22-767-9585
Switzerland E-Mail: Roberto.Divia@cern.ch

[Back to original message]