Advances in computing hardware and novel multimedia applications have urged the development of handheld mobile devices such as smartphones and tablets. Videos are accounting as the highest data traffic on handheld devices. With this significant increase of mobile video, one of the challenges is how to efficiently transmit the bulky video contents to resource-constrained mobile devices. Despite the attractive features of the widely-used approaches on the bi- Trate adaptation such as DASH standard, video playback impose significant demands on the limited battery capacity of mobile devices. Thus the development of efficient approaches to save battery lifetime has become a key research topic. We are running a study towards design of an adaptive framework for energy-efficient streaming of video segments to mobile devices over wireless networks, that can further be integrated into DASH.