Download Introduction Video For Linux Two is the second version of the Video For Linux API, a kernel interface for analog radio and video capture and output drivers. Early drivers used ad-hoc interfaces. These were replaced in Linux 2.2 by Alan Cox' V4L API, based on the interface of the bttv driver. In 1999 Bill Dirks started the development of V4L2 to fix some shortcomings of V4L and to suppor..