Analog Protection System
The Analog Protection System (APS), also known as Copyguard by some people, is a videocassette and videodisc copy protection system originally developed by Macrovision Corporation. The system was developed to prevent bootlegging of original videocassettes and videodiscs.
List of Customers
- 20th Century Fox Home Entertainment (VHS: 1986-1998, 2004-2006; DVD: 1998-2020)
- Group Productions
- AIX Media Group
- Artisan Entertainment (mainly on DVD releases and on a few blockbuster VHS releases in the 1990s)
- Bandai Entertainment
- DreamWorks Home Entertainment (before 2003)
- FUNimation Entertainment
- HBO Home Entertainment
- Home Vision Entertainment
- The Lyons Group
- Media Home Entertainment (except for Anchor Bay Entertainment-era VHS releases)
- MGM Home Entertainment (1986-1993)
- Paramount Home Media Distribution (1990-1993, 1998-2013)
- Pioneer Entertainment (mainly on DVD releases)
- PolyGram Video (1997-1999)
- Sony Pictures Home Entertainment (on some rare occasions on VHS: 1996-1999; DVD: 1997-2003)
- Sony Wonder (on some 2006 releases)
- United Learning
- Universal Pictures Home Entertainment (1986-2007)
- Viz Video (mainly on DVD releases)
- Walt Disney Studios Home Entertainment (1986-2014, except a few rare occasions including: all LP-mode releases, some copies of the 1995 VHS of While You Were Sleeping that have no previews, and some early Walt Disney Mini-Classics releases like Ben and Me)
- Warner Bros. Home Entertainment (1986-1993)
- New Line Home Entertainment (on early DVD releases, as well as on the VHS of Teenage Mutant Ninja Turtles II: Secret of the Ooze and on some pre-Time Warner Turner-era VHS releases)
- Zomba Video