Copy DVD to ISO for Mac
An ISO image is an archive file (also known as a disk image) of an optical disc in a definite format. An ISO image includes all the data of files contained on the archived CD/DVD, or any other disc format. They are stored in an uncompressed format. In addition to data of the files it also contains all the file system metadata, including boot code, structures, and attributes.
DVD Copy for Mac has the ability to copy DVD to ISO file, burn ISO file to an optical Disc, copy ISO file to hard disc.
Download the free trail version of DVD Copy for Mac. Then install and lunch it.
Guide : copy DVD to DVD image ISO for Mac
Step 1: Select DVD source:
From the "Source" menu choose the DVD-Video that you want to copy in the pop-up folder.

Step2: Select the target
Select the target from the "Target" menu. It can burn DVD-Video disc and save the target as DVD Folder or Image(.iso).

Step 3: Start the copy
After all things done, click the "Start" button to start copying your DVD movie.

Step 4: Copy finished
After the copy is done, a window will appear to inform you that the copy is finished. Click "Finish" to close the window and end the copy.