Help me a bit here. Tom reports "worse looking" copies using Roxio software,
but my understanding is that such software requires an error-free read of
the original. Problems with copies may reflect quality problems with the
target disc and/or drive, not problems with the software. Any comments?

Tom, what media and drive are you using, and what is your write speed? Could
you provide a little more information as to what "worse looking" represents?


In my experience, standard DVD error detection and correction with high
quality read drives can successfully read through tangential scratches 3 mm
long or longer, depending on the servo characteristics of the drive. That is
a rather severe defect, and may not be Tom's problem.

Jerry
Media Sciences, Inc.

> -----Original Message-----
> From: Association for Recorded Sound Discussion List
> [mailto:[log in to unmask]] On Behalf Of Michael Biel
> Sent: Tuesday, August 24, 2010 7:33 PM
> To: [log in to unmask]
> Subject: Re: [ARSCLIST] Bit-perfect DVD image files
> 
>   If you need to make enough copies, it might be worth your while to get
> a disc copying machine.  I use the one from Disc Masters, and you can
> get the small one for about $200.  It saves time and hassle, and you
> don't tie up your computer.
> 
> Mike Biel  [log in to unmask]
> 
> 
> On 8/24/2010 7:08 PM, Dave Rice wrote:
> > Hi Tom,
> > dvdisaster will produce a bit-perfect iso file from a non-DRM DVD disc
> ... when it is possible. If the dvd is scratched or damaged it will report
> on in which sectors the error occurred and its status by using parity data
> per sector. Much of dvdisaster's documentation regards making additional
> parity data files, the .ecc files, but if you just run with the 'Read'
> option you'll be able to generate a file-based iso image of the source DVD
> disc with the technical reporting about the actual read to verify the
> exactness of the effort (save the reporting data from the 'View Log'
> dialog).
> > See: http://sourceforge.net/projects/dvdisaster/ http://dvdisaster.net
> > Dave Rice
> > avpreserve.com
> >
> > On Aug 24, 2010, at 6:30 PM, Tom Fine wrote:
> >> Can you folks recommend good Windows software to produce disc images,
> bit-perfect, of non-DRM DVD discs and DVDR data discs? I find that
> standard Roxio disc-duplicator software produces noticeable worse-looking
> copies of DVD discs. These are non-DRM non-commercial DVD's recorded on
> DVD+R media, transfers of analog video. Again, "master" recording looks
> great but copies made with Roxio DiscCopy software look worse so I'm
> assuming they are not bit-perfect clones for some reason.
> >>
> >> Advice/recommendations much appreciated. Boy I sure prefer sticking
> with digital audio, this video stuff is always one challenge or another!
> >>
> >> -- Tom Fine
> >