Quality of Experience Assessment of Video Quality in Social Clouds
Quality of Experience Assessment of Video Quality in Social Clouds
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DOI：
10.1155/2017/8313942
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发表时间：
2017-12
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影响因子：
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通讯作者：
Asif Ali Laghari;Hui He;Shahid Karim;H. Shah;N. K. Karn
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文献类型：
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作者：
Asif Ali Laghari;Hui He;Shahid Karim;H. Shah;N. K. Karn
社交云上的视频共享在世界各地的用户中很受欢迎。高清（HD）视频的文件大小很大，因此在云存储中存储和从云到客户端高质量的视频流中的流数是服务提供商的一个大问题。社交云压缩视频，以节省存储和流媒体网络，以提供服务质量（QoS）。与原始视频相比，视频的压缩降低了质量，并且在在线播放期间和下载后更改了参数。由于压缩而导致的视频质量退化会降低最终用户的体验质量（QOE）水平。为了评估视频压缩的Qoe，我们通过上传，共享和播放社交云的视频进行了主观（QOE）实验。选择了三个流行的社交云，Facebook，Tumblr和Twitter，用于在线上载和播放用户。 QoE是通过使用给用户提供的问卷来录制的，以提供有关他们感知的视频质量的经验。结果表明，与其他云相比，Facebook和Twitter压缩高清视频更多。但是，与Twitter相比，Facebook提供的压缩视频质量更高。因此，与Tumblr相比，用户为在线视频质量的Twitter分配了较低的评分，而Tumblr提供了较少压缩的视频的高质量在线播放。
Video sharing on social clouds is popular among the users around the world. High-Definition (HD) videos have big file size so the storing in cloud storage and streaming of videos with high quality from cloud to the client are a big problem for service providers. Social clouds compress the videos to save storage and stream over slow networks to provide quality of service (QoS). Compression of video decreases the quality compared to original video and parameters are changed during the online play as well as after download. Degradation of video quality due to compression decreases the quality of experience (QoE) level of end users. To assess the QoE of video compression, we conducted subjective (QoE) experiments by uploading, sharing, and playing videos from social clouds. Three popular social clouds, Facebook, Tumblr, and Twitter, were selected to upload and play videos online for users. The QoE was recorded by using questionnaire given to users to provide their experience about the video quality they perceive. Results show that Facebook and Twitter compressed HD videos more as compared to other clouds. However, Facebook gives a better quality of compressed videos compared to Twitter. Therefore, users assigned low ratings for Twitter for online video quality compared to Tumblr that provided high-quality online play of videos with less compression.