To access device specific properties, the selected video source object must be accessed.
% Create a video input object using a Windows web cam.
vid = videoinput('winvideo', 1);
% Access the selected video source object.
src = getselectedsource(vid);
% Determine what device specific properties are available.
get(src)
If device specific settings, like frame rate or brightness, are not available on the video source object, the device does not provide access to device specific settings. This is usually caused by devices using the older VFW (Video for Windows) device drivers, which do not always expose the DirectX interfaces required by the toolbox. Without these interfaces, the toolbox cannot programmatically query the device for any properties, which prevents the toolbox from providing a command line interface to the device settings.
Although the device may provide a UI interface to various image and device settings, the toolbox can only provide access to the settings exposed through standard DirectX interfaces. Often times, device manufacturers will develop their own custom UI panels that expose various settings. However, these settings are only accessible using the graphical UI panels, not by any programatic DirectX interface.
To work around this, use the device's application UI to configure the desired settings.
