Macrovision Solutions Corporation (also called Rovi) is a company that sells copy protection products. Its two core legacy products were called RipGuard and ACP. The former one can change the DVD content format to disrupt the DVD ripping software, while the latter implants within the off-screen VBI lines of video a series of excessive voltage pulses that can interrupt a DVD recorder/VCR in the form of pulse analog signal. The result is the change in the image brightness, making the DVD unpleasant to play back.

Its mechanism is by embedding the bad sectors onto the DVD deliberately as an extra layer, in conjunction with Content Scramble System (CSS). While reading the ARccOS protected DVDs, most DVD players will fail to access, and some DVD copying software will produce errors.

The technology of producing effective copy control signals produced during converting the digital programs (DTB, BS/CS mode, SKY PerfecTV! Premium Service) to DVD-R is called CPRM. Besides moving and deleting, CPRM also controls the copying of digital media on a PC or digital player. The DVDs added with CPRM cannot play if the camera, hard drive or media player is not compatible with CPRM. Even the general media player Windows Media Player and VLC media player cannot play such DVDs because they do not support CPRM.

Rip any DVDs with the above copy protections fast and easily!