The SAA7133 TV Card Windows driver is a software driver for the SAA7133 chip, a TV tuner and video capture device developed by NXP Semiconductors (formerly part of Philips). The SAA7133 chip is typically found in TV tuner cards that allow you to watch and record television programs on your PC. It supports both analog and digital television signals, making it a hybrid TV tuner.

When you install the SAA7133 TV Card driver, it enables your Windows operating system to communicate with the hardware, allowing you to view TV channels, capture video, and use the device for other multimedia functions like video recording.