The Video keyword initialises the video device and specifies the video input type.
Video device The video input devices supported are AJA_OEMLH, and AJA_OEM2K.
Default video input formatThe default video input format that corresponds to the input configuration of the video card. This setting is overridden by the video input formats specified by the lines you uncomment for each VTR under the Vtr keyword heading.
The Video keyword uses the following syntax
Video <video_device>, <default_video_format>