wrtc.getVideo is a boolean property controlling access to local camera.
If wrtc.getVideo is false local camera will not be used (calls will not transmit video). As this property affects camera usage it will affect all calls. To stop sending video in one single call set call.sendVideo=false instead.
Boolean controlling access to local camera:
true
wrtc.getVideo is usually set in wrtc.init(). If you for some reason want to change it later you need to call wrtc.changeMedia() after.