Indicate width and height of incoming video stream
The VideoResolution property is a two-element vector indicating the width and height of the frames in the incoming video stream. VideoResolution is specified as
Width is measured in pixels and height is measured in rows.
Note You specify the video resolution when you create the video input object, by passing in the video format argument to the videoinput function. If you do not specify a video format, the videoinput function uses the default video format. Use the imaqhwinfo function to determine which video formats a particular device supports and find out which format is the default.