Mirta, et al. 2010 [5] introduces a HD video broadcasting scheme by using scalable video coding so that the devices under various network environments can obtain the video with different resolutions.
In this paper, we investigate power consumption of videos encoded by various codec standards and try to find rules to encode optimal video codes on handheld devices from the energy efficiency point of view.
With the rapid progress of semiconductor technology, video coding is becoming popular in modern mobile devices to provide video services.
Thus, the computational loading of all video coding must be completed at the terminal devices.
For instance, the novel Scalable Video Coding (SVC) technology [2] provides both bitrate and device capability adaptation, which are especially useful in heterogeneous network environments.
The small-scale nature of the recording device forces severe constraints on the required video coding technology, in terms of computational complexity, operating time, and power consumption.
While several current video coding and transmission specifications have been defined for relatively old devices having HD spatial resolution and a temporal rate of 30 fps, spatial and temporal resolutions of many commercial display devices have become higher[1].
SVC (Scalable Video Coding) is designed to adapt to heterogeneous networks and various terminal devices.
For example, one of the most time-consuming issues when computing standards with video coding and transmission has to do with the ubiquitous portable consumer electronic devices, all with multimedia capabilities, that require the efficient implementation of video coding algorithms, creating a trade-off between accuracy, efficiency, and power consumption.
In the scenario depicted in Figure1, the end-user devices will employ the lowest complexity algorithm of traditional and WZ video coding while the majority of computations will be taken over by the transcoder.
Taking into account the advantages of WZ coding for low-cost video encoding, in the literature several WZ to traditional video coding transcoders have been proposed in order to support video communications between portable low-cost devices, such as one based on H.263[8] and another on H.264/AVC[9], although these approaches did not concern about heterogeneous network or devices.
