When I copy a DVD to make a backup, am I getting a quality reduction?

Quote:

Originally Posted by Nick

I have a really old program called DVD X Copy and it comes with another program called DVD X Rescue. I use DVD X Rescue to backup all the movies that I buy and then I only watch the backup copy. When I back them up am I getting any quality reduction, or is the movie 100 percent the same as the original disk? Thanks in advance!

If you wanna
1. copy a DVD-9 (dual layer DVD disc) to DVD-9
or
2. copy DVD-5 (single layer DVD disc) to DVD-5,

you get an absolutely identical copy. Please note that dual layer blank DVDs (DVD+R, DVD-R, DVD+RW, DVD-RW) are much more expensive then the single layer ones.

If you wanna copy a DVD-9 disc (9 GB) to a DVD-5 (4,37GB), you can use freeware DVD Shrink. It can reduce the size of your DVD by decreasing file size (which obviously make quality worse) and/or by not copying the videos, audio tracks, subtitles you choose not to use.

There are too things that might prevent you from getting a copy of you DVD disc, they are scratches and DVD protection.

You can use freeware DVD Decrypter to copy DVDs. It works fine with CSS protection. As for some other protections that DVD Decrypter can't handle, most of them can be removed with AnyDVD

You can use DVD Shrink with DVD Decrypter or AnyDVD.