Why can't I get the output while using 'webcam' command?

I have connected a webcam to my computer and try to get snapshot from matlab. I viewed my webcam by typing 'webcamlist' in the command window and get the output 'USB Video Device' But while typing only 'webcam' it shows error- " Error getting the current Media Type". I know its a simple error but I can't cope with it. However, I am using matlab R2014a and have installed image acquisition toolbox already. Please help me

[Geoff Hayes]

Please include the error message that you observe when you invoke the webcam command. As well, please include the line of code that raises this error.

Answer 1

[Image Analyst]

Do you want to use the Image Acquisition Toolbox, or the Webcam Support Package to do this?