sends a zoom command to the camera according to the user control concode_field_sep int framerate concode_elem_sep String cameraIPAddress concode_elem_sep String channel concode_elem_sep int cameraPort concode_elem_sep int compression concode_elem_sep String resolution concode_elem_sep URL url concode_field_sep URL getURL concode_elem_sep void halt concode_elem_sep void movePanTilt concode_elem_sep String composeURL concode_elem_sep void runUrl concode_elem_sep void start concode_elem_sep void setIPAddress