  This paper proposes a method to evaluate and model the power consumption of
modern virtual reality playback and streaming applications on smartphones. Due
to the high computational complexity of the virtual reality processing
toolchain, the corresponding power consumption is very high, which reduces
operating times of battery-powered devices. To tackle this problem, we analyze
the power consumption in detail by performing power measurements. Furthermore,
we construct a model to estimate the true power consumption with a mean error
of less than 3.5%. The model can be used to save power at critical battery
levels by changing the streaming video parameters. Particularly, the results
show that the power consumption is significantly reduced by decreasing the
input video resolution.
