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
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