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Network performance analysis of advanced video coding schemes

机译：高级视频编码方案的网络性能分析

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摘要

Advanced video coding schemes, currently under investigation, provide greater bandwidth efficiency than existing schemes. However, the network resources required by these advanced-coded video streams have not yet been fully investigated. In this paper, we present a network performance analysis of recent video coding schemes, such as H.264 coding and PFGS coding. The robustness of these coding schemes to channel losses is evaluated using video sequences containing various motion activity levels. Simulation results showed that H.264 streams require larger buffering at the decoder, to overcome the higher delay variations seen over lossy packet networks. PFGS streams were found to produce reconstruction qualities superior to FGS streams, if the maximum rate of the enhancement layer is selected based on the receiver capabilities. This paper also proposes a framework for quality monitoring of the reconstructed video, after transmission over lossy packet networks and application of appropriate error concealment techniques. The proposed framework is flexible enough to be used with any structure of frame types, and any level of motion activities in the underlying video sequence.
机译：当前正在研究的高级视频编码方案比现有方案提供更高的带宽效率。但是，这些高级编码的视频流所需的网络资源尚未得到充分研究。在本文中，我们对最新的视频编码方案（例如H.264编码和PFGS编码）进行网络性能分析。使用包含各种运动活动级别的视频序列评估这些编码方案对信道丢失的鲁棒性。仿真结果表明，H.264流需要在解码器处有更大的缓冲，以克服在有损数据包网络上看到的更高的延迟变化。如果基于接收器能力选择增强层的最大速率，则发现PFGS流产生的质量优于FGS流。本文还提出了一种在有损分组网络上传输并应用适当的错误隐藏技术后，对重构视频进行质量监控的框架。所提出的框架足够灵活，可以与任何帧类型的结构以及基础视频序列中任何级别的运动活动一起使用。

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