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An Objective Approach to Measuring Video Playback Quality in Lossy Networks using TCP

机译:一种使用TCP测量有损网络中视频播放质量的客观方法

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摘要

In this work, we investigate a new objective measurement for assessing the video playback quality for services delivered in networks that use TCP as a transport layer protocol. We define the new metric as pause intensity to characterize the quality of playback in terms of its continuity since, in the case of TCP, data packets are protected from losses but not from delays. Using packet traces generated from real TCP connections in a lossy environment, we are able to simulate the playback of a video and monitor buffer behaviors in order to calculate pause intensity values. We also run subjective tests to verify the effectiveness of the metric introduced and show that the results of pause intensity and the subjective scores made over the same real video clips are closely correlated.
机译:在这项工作中,我们研究了一种新的客观测量方法,用于评估使用TCP作为传输层协议的网络中提供的服务的视频播放质量。我们将新指标定义为暂停强度,以根据连续性来表征播放质量,因为在TCP的情况下,数据包受到保护,不会丢失,但不会延迟。在有损环境中,使用从实际TCP连接生成的数据包跟踪,我们能够模拟视频的回放并监视缓冲区行为,以便计算暂停强度值。我们还进行了主观测试,以验证引入的指标的有效性,并表明,暂停强度的结果与在同一真实视频剪辑上获得的主观得分密切相关。

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