...UVC PTZ control to be more correct. 

Video in English, French and Spanish

Open Skype, log in and click on the "..." icon and choose "Settings"

Sjype Settings

Go to the "Audio and Video" tab, select your camera from the list (here a CM4x recognized as "FHD camera") and recheck if it gives a live preview below.

Skype Options

Click on "Webcam settings" to open the properties window:

- Video Proc Amp (to adjust the Brightness, Contrast, hue,..)


- Camera Control (to control the PTZ functions of the camera):