The REALmagic Hollywood Plus is a hardware MPEG-2 decoder card that was designed for PC systems in the late 1990s and early 2000s. This card enabled users to watch high-quality DVD video playback and other MPEG-2 video streams on their PCs by offloading the decoding process from the CPU to the dedicated hardware on the card itself. It also supported Dolby Digital (AC-3) audio for enhanced sound during video playback, making it a popular choice for users looking to create home theater PCs or enjoy DVD movies with better performance than CPU software decoding.

The REALmagic Hollywood Plus Windows driver is a piece of software that enables Windows to communicate with and make use of the hardware decoder features of the card. These drivers are required for the card to function properly in a system, providing DVD playback acceleration, improved video quality, and the ability to handle the decoding of video streams without taxing the computer's processor.