What does macrovision mean?

Is there a difference between multi-region hack and Macrovision ?

What exactly does Macrovision mean??

Multi-region hacks allow you to play DVDs from any country on your DVD player (America is region 1 while China is region 6 for example). Macrovision is some crap that prevents an owner of a DVD to make a legal backup on VHS. If you don’t disable Macrovision than the picture quality of the copy would be very poor.

Macrovision is the name of the company that produces those pain in the neck lines that pop up on VHS copies of tapes, the dvd encyrption routine, and the authors of some piece of crap copy protection that called Safedisc. They developed this stuff to keep people from making working BACKUPS of endusers and consumers that properly work.