Whether you have lot of DVD discs waiting for backup or if you just want to convert your DVD disc files into the ISO image file, you won’t find a simpler and free tool for this than the one mentioned below. Yes there are lot of tools available for this purpose online but not all of those are free to neither use nor simpler than this.
The tool is called BDlot DVD ISO Master, and what this tool does is it can backup any DVD to ISO image easily without any quality loss of video or audio and even it can burn an ISO image to a DVD disc too. It can save regular and encrypted DVD to ISO without support from a third party DVD decrypting software, as it has the ability to remove both DVD region codes and other DVD protections like CSS, CPRM, CPPM, APS, UOPs, ARccOS, Rip-Guard, and Disney X protection. It can also burn ISO to CD/DVD/Blu-ray disc in a super-efficient way.
The tool is really useful if you want to backup most of your DVD discs in your hard drive or even in the USB drive. The tool is efficient in working both ways either from DVD to ISO or vice versa that is from ISO to DVD and that too with a good burning rate.
The burnt disc or the backed up file, both are of the same original quality as the source file, so there is no video or audio quality loss. The tool is also compatible on Windows both 32 and 64 bits.