what is macrovision
Macrovision. Macrovision is American company that develops various copy-protection schemes for audio and video purposes. The company is best known for their copy-protection mechanism for VHS tapes bundled with virtually every sold pre-recorded VHS tape in the world.ipGuard is a copy protection mechanism developed by Macrovision. Since Content Scrambling System (CSS) on retail DVDs is so easy to circumvent using free widespread software, several methods to discourage making proper copies of DVD-Video content have been devised and put out on the market.