  We report results from a measurement study of three video streaming services,
YouTube, Dailymotion and Vimeo on six different smartphones. We measure and
analyze the traffic and energy consumption when streaming different quality
videos over Wi-Fi and 3G. We identify five different techniques to deliver the
video and show that the use of a particular technique depends on the device,
player, quality, and service. The energy consumption varies dramatically
between devices, services, and video qualities depending on the streaming
technique used. As a consequence, we come up with suggestions on how to improve
the energy efficiency of mobile video streaming services.
