  The environmental impact of video streaming services has been discussed as
part of the strategies towards sustainable information and communication
technologies. A first step towards that is the energy profiling and assessment
of energy consumption of existing video technologies. This paper presents a
comprehensive study of power measurement techniques in video compression,
comparing the use of hardware and software power meters. An experimental
methodology to ensure reliability of measurements is introduced. Key findings
demonstrate the high correlation of hardware and software based energy
measurements for two video codecs across different spatial and temporal
resolutions at a lower computational overhead.
