RealDVD rips DVDs just like you do,

People have been avidly feeding music CDs into their computers for years, ripping digital copies of albums and transferring the files to their other computers and mobile devices.

This has not happened nearly as much with DVDs, for both practical and legal reasons. But that may soon change.

On Monday, RealNetworks, the digital media company in Seattle, will introduce RealDVD, a $30 software program for Windows computers that allows users to easily make a digital copy of an entire DVD — down to the extras and artwork from the box.

Robert Glaser, chief executive of RealNetworks, called it “a compelling and very responsible product that gives consumers a way to do something they have always wanted to do,” like make backup copies of favorite discs and take movies with them on their laptops when they travel.

But RealDVD is also sure to be a controversial product — one that will easily earn its maker the ire of Hollywood’s powerful and litigious movie studios.

Since the DVD format was introduced more than a decade ago, Hollywood has unremittingly sought to protect the DVD from the fate that befell the CD, which has no mechanism to prevent copying.

Pirate music services like Napster sparked the digital music revolution. The ability of regular consumers to make digital copies of CDs easily with their computers fed such services and, in Hollywood’s view, led to the weakening of the major music labels.

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