For the Mac try MacTheRipper (See links below).
OR You can also try Daniusoft's DVD Ripper which is good for both Windows & MAC.
No DVD ripper will erase data from a DVD.
you can use MED Free DVD Ripper DVD Ripper is a powerful ,easy to use DVD Ripper tool for Video DVD devices .
The websites WinXDVD, Extreme Apps, DVD Fab HD Dycrypter, DVD Shrink, Format Factory and Freemake Video Converter all have downloads for free DVD rippers.
I think the Magic DVD ripper is. The thing is that you can have a free trial where you can decrypt 5 movies or you can Google "Magic DVD ripper" and there will pop up a link for youtube that tells how you can get the full version for free. Hope this helps.
There are a few free DVD rippers for Mac OS X that Macworld recommends. These DVD rippers include HandBrake, Mac The Ripper, and MacX DVD Ripper. These DVD rippers work extremely well, but should only be employed for personal reasons due to copyright laws.
One can purchase a Mac DVD Ripper from the Mac DVD Ripper official website. One can also download this from the CNET website. One is able to download a free trial before purchasing the full product.
It will not affect the DVD, the ripper just copies the dvd.
A DVD ripper will copy the contents of a DVD to the hardware disk of a computer. The DVD ripper can deactivate the copy protection on the DVD, and then simply copies the contents of the DVD.
You can go to the dvdfab website and download.
Pavtube DVD ripper 2.0.1.29
A DVD Ripper is used for DVD ripping which is the process of copying the audio and video information off a DVD and onto a hard drive. DVD Ripper usually only can rip DVD and can't rip Blu-ray while a Blu-ray Ripper can rip both DVD and Blu-ray.
I am using iToolSoft DVD ripper, a good chioce for me. You can have a try with it.