In one embodiment, a method includes characterizing a first packet of a video stream as being associated with a first frame type, wherein the video stream is arranged to be transmitted on a wireless local area network. The present invention may be used to measure the magnitude and direction of fluid flow by converting the kinetic energy of a moving fluid into a rotating magnetic field. The housing contains tube sheets that divide the space within the housing into three separate, gas-tight spaces, with the tubes mounted in the central space.