First you have to start your VCL Video Stream by clicking below :
For Windows 7 :
1) First you have to download Flash Media Live Encoder (FMLE) :
It’s free, but you have to fill form Here : http://offers.adobe.com/en/na/leap/landings/fmle3.html
2) If you need to stream your desktop or screen, you need an additional software :
For Windows :
vh-screen-capture-driver
For Mac :