WDM Video Capture Driver for Bt848 / Bt849 / Bt878 & Bt879 Chipsets. WDM Video Capture Driver The current driver is a Video Capture driver for Bt848, Bt849, Bt878 and Bt879 based video capture boards. It tries to take the most of the hardware, using all the features the chipset has to offer. It is also implemented as a WDM driver, so the same driver works under Win2000, Win98SE, WinXP and WinMe wi