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引用次数: 4
摘要
MMT (MPEG Media Transport)是一种应用级的视频传输协议。利用H.264/AVC的错误隐藏机制和MMT的应用层前向纠错机制，对视频IP传输的主观QoE(体验质量)和客观应用层QoS进行评估。在实验中，我们采用了两种内容，两种类型的每帧图像的切片数，两种类型的视频总比特率及其FEC码。我们试验了几种负载条件。然后，我们将FEC方案与三个码率值和无FEC方案进行比较。从评估结果来看，QoE增强的适当码率不仅取决于网络条件，还取决于内容。
The Joint Effect of MMT AL- FEC and Error Concealment on Video Streaming QoE
This paper deals with MMT (MPEG Media Transport), which is an application-level protocol for video transmission. We assess subjective QoE (Quality of Experience) and objective application-level QoS of video IP transmission with error concealment mechanisms of H.264/AVC and application-level forward error correction (AL-FEC) of MMT. In the experiment, we employ two contents, two types of the number of slices per picture frame, and two types of the total bitrate of video and its FEC code. We experiment with several load conditions. We then compare FEC schemes with three code rate values and no FEC scheme. From the assessment results, we show that the appropriate code rate for QoE enhancement depends on not only network conditions but also contents.
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