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This article aims to tell you what ISO image is and its utility, besides, you can also learn how to copy DVD to ISO on Mac from the step-by-step guide of using DVD Copy pro for Mac.

What is ISO?

An ISO image is an archive file of an optical disc in a format defined by the International Organization for Standardization (ISO). This format is supported by many software vendors. ISO image files typically have a file extension of .iso. The name ISO is taken from the ISO 9660 file system used with CD-ROM media.

As with any other archive, 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. ISO images do not support multi-track, thus they cannot be used for audio CDs, VCD, and hybrid audio CDs, which are usually ripped as audio files. However, for disks that contain a single track of data followed by tracks of audio, such as video game disks, the first track can be ripped as an ISO, and the rest as audio files.

Utility

All the properties mentioned above make it an attractive alternative to physical media for the distribution of software as it is simple to transfer over the Internet or via a LAN connection. In addition, ISO image is also widely-used for making backup copies of physical disks(Copy DVD movies to ISO), in case the original is damaged, lost or stolen. ISO image can be automatically recognized by Apple DVD Player as well. For PSP users, you can make backup ISO files of UMD Games.

How to Copy DVD to ISO on Mac

Step 1. Launch the DVD Copy program and Insert your DVD Disc.

Step 2. Choose "ISO" in the Output Options menu.

From the Copy Options menu, you can select Main movie copy, Customized copy or Full copy.

Step 3. Click "Start" to copy DVD to ISO on Mac

After clicking "start",  input the DVD name and choose the location where you want to save.

If you wanna know more, go to how to copy DVD to ISO on Mac