论文标题
服务质量（QoS）：视频流的测量
Quality of Service (QoS): Measurements of Video Streaming
论文作者
论文摘要
如今，视频流在社交云上正在增长，最终用户总是希望在朋友之间分享高清视频（HD）视频。大部分视频是通过智能手机和其他高清设备录制的，而短时视频的文件大小很大。视频的大文件大小需要高带宽才能在Internet上上传和下载，还需要更多时间来加载网页以进行播放。因此，避免此问题社交云在上传过程中压缩视频，以使网页中的平稳播放和快速加载。压缩降低了视频质量，这也降低了最终用户的体验质量。在本文中，我们测量了社交云上不同标准视频文件格式的QoS；它们在分辨率，音频/视频比特率和存储大小方面相互差异。
Nowadays video streaming is growing over the social clouds, where end-users always want to share High Definition (HD) videos among friends. Mostly videos were recorded via smartphones and other HD devices and short time videos have a big file size. The big file size of videos required high bandwidth to upload and download on the Internet and also required more time to load in a web page for play. So avoiding this problem social cloud compress videos during the upload for smooth play and fast loading in a web page. Compression decreases the video quality which also decreases the quality of experience of end users. In this paper we measure the QoS of different standard video file formats on social clouds; they varied from each other in resolution, audio/video bitrate, and storage size.
