scholarly journals Video Quality Adaptation for Limiting Transcoding Energy Consumption in Video Servers

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 126253-126264
Author(s):  
Dayoung Lee ◽  
Jungwoo Lee ◽  
Minseok Song
Author(s):  
Koné Kigninman Désiré ◽  
Eya Dhib ◽  
Nabil Tabbane ◽  
Olivier Asseu

Cloud gaming has become the new service provisioning prototype that hosts the video games in the cloud and broadcasts the interactive game streaming to the players through the Internet. Here, the cloud must use massive resources for video representation and its streaming when several simultaneous players reach a particular point. Alternatively, various players may have separate necessities on Quality-of Experience, like low delay, high-video quality, etc. The challenging task is providing better service by the fixed cloud resource. Hence, there is a necessity for an energy-aware multi-resource allocation in the cloud. This paper devises a Fractional Rider-Harmony search algorithm (Fractional Rider-HSA) for resource allocation in the cloud. The Fractional Rider-HSA combines fractional calculus, Rider Optimization algorithm (ROA), and HSA. Moreover, the fitness function, like mean opinion score (MOS), gaming experience loss, fairness, energy consumption, and network parameters, is considered to determine the optimal resource allocation. The proposed model produces the maximal MOS of 0.8961, maximal gaming experience loss (QE) of 0.998, maximal fairness of 0.9991, the minimum energy consumption of 0.3109, and minimal delay 0.2266, respectively.


2021 ◽  
Author(s):  
Xiaoming Fan

This thesis discusses the performance of a solar-powered wireless visual sensor network and its visual applications. We examine the performance of a layered clustering model in sparing communication energy consumption and prolonging the system lifetime. The experimental result illustrates that the system can transmit the same amount of video packets with less energy consumption when video quality is at achievable minimum distortion rate. Therefore, the visual sensor network may achieve higher performance by applying rechargeable solar cell and layered clustering. After receiving all the video data, the sink may be applied with advanced post-processing techniques. We propose an innovative post-processing algorithm, Parallel Self-Organizing Tree Map (PSOTM) that can be implemented in the sink. By means of processing visual data in parallel, PSOTM may achieve faster image segmentation with insignificant impacts on the visual quality.


2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Hung T. Le ◽  
Hai N. Nguyen ◽  
Nam Pham Ngoc ◽  
Anh T. Pham ◽  
Truong Cong Thang

Recently, HTTP streaming has become very popular for delivering videos over the Internet. For adaptivity, a provider should generate multiple versions of a video as well as the related metadata. Various adaptation methods have been proposed to support a streaming client in coping with strong bandwidth variations. However, most of existing methods target at constant bitrate (CBR) videos only. In this paper, we present a new method for quality adaptation in on-demand streaming of variable bitrate (VBR) videos. To cope with strong variations of VBR bitrate, we use a local average bitrate as the representative bitrate of a version. A buffer-based algorithm is then proposed to conservatively adapt video quality. Through experiments in the mobile streaming context, we show that our method can provide quality stability as well as buffer stability even under very strong variations of bandwidth and video bitrates.


2018 ◽  
Vol 22 (6) ◽  
pp. 1260-1263 ◽  
Author(s):  
Sung-Woong Jo ◽  
Wonsuk Yoo ◽  
Jong-Moon Chung

Author(s):  
Muhamad Hanif Jofri ◽  
Mohd Farhan Md Fudzee ◽  
Mohd Norasri Ismail ◽  
SHAHREEN KASIM ◽  
Jemal Abawajy

<p>Today, consumers use a smartphone device to display the media contents for work and entertainment purposes, as well as watching online video. Online video streaming is the main cause that consume smartphone’s energy quickly. To overcome this problem, smartphone’s energy management is crucial. Thus, a hybrid energy-aware profiler is proposed. Basically, a profiler will monitor and manage the energy consumption in the smartphone devices. The hybrid energy-aware profiler will set up a protocol preference of both the user and the device. Then, it will estimates the energy consumption in smartphone. However, saving energy alone can contribute to the Quality of Experience (QoE) neglection, thus the proposed solution takes into account the client QoE. Even though there are several existing energy-aware profilers that have been developed to manage energy use in smartphones however, most energy-aware profilers does not consider QoE at the same time. The proposed solution consider both, the performance of the hybrid energy-aware profiler is compared with the baseline energy models against a variation of content adaptation according to the pre-defined variables. Three types of variables were determined; resolution, frame rate and energy consumption in smartphone devices. In this area, QoE subjective methods based on MOS (Mean Opinion Score) are the most commonly used approaches for defining and quantifying real video quality. Nevertheless, although these approaches have been established to consistently quantify users’ amounts of approval, they do not adequately realize which are the criteria of video attribute that important. In this paper, we conducted an experiment with a certain devices to measures user’s QoE and energy usage of video attribute in smartphone devices. Our results demonstrate that the list of possible solution is a relevant and useful video attribute that satify the users.</p>


2014 ◽  
Vol 29 (4) ◽  
pp. 449-461 ◽  
Author(s):  
Tuan Tran Thai ◽  
Jérôme Lacan ◽  
Emmanuel Lochin

2016 ◽  
Vol 62 (3) ◽  
pp. 301-309 ◽  
Author(s):  
Hyunmi Jeong ◽  
Jinwoo Yang ◽  
Minseok Song

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