Not to be confused with the DivX video codec, DIVX was a DVD format introduced by Circuit City in 1998.
Aimed squarely at the DVD rental market of the time, the (awful) idea was that consumers would buy a disc for a relatively low price of around $5, but would only be able to watch the video on the disc for a relatively short period of time. The DIVX DVD players, which were required to use the discs, acted as a copy protection mechanism requiring authorization from a remote server in order to enable playback of the disc content.
The format was, thankfully, a disaster that nobody wanted, and was discontinued in 1999. But not before they made awesomely bad internal training videos like this.