The Hercules SmartTV WDM Video Capture Windows driver is typically used for devices that capture video signals, such as a TV tuner card or video capture device, which connects to a computer to allow the capture of video from a variety of sources like cable TV, VHS, or other video equipment. The "WDM" part of the name refers to Windows Driver Model, which is a framework for device drivers on Windows operating systems.

The driver enables the device to work properly with Windows, ensuring that it can capture video and send it to software applications that require the video input (e.g., video editing, recording, or streaming software).