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 help stop bootleggers who were making pirated copies of videotapes and videodiscs recorded directly from the original copies.
List of Customers
- 20th Century Fox Home Entertainment (VHS: 1986-1998, 2004-2006; DVD: 1998-2020)
- 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