DIFFSERV-AWARE STREAMING OF H . 264 VIDEO
DIFFSERV-AWARE STREAMING OF H . 264 VIDEO
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发表时间：
2004
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通讯作者：
Julio Orozco;David Ros
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作者：
Julio Orozco;David Ros
在本文中，我们提出了一种在IP网络上使用最先进的H.264编解码器生成流视频的方法，该方法支持差异化服务（DiffServ）架构，特别是每跳保证转发（AF）行为。该方案利用了AF的丢包优先级和H.264编解码器的一些新特性，从而在视觉质量方面保护了最重要的信息，并减少了网络拥塞下的失真。通过H.264参考软件编解码器、网络仿真和客观视频质量测量对该方法进行了评价。我们的结果表明，所提出的方法可以获得比传统的最佳努力流更高的质量。关键词：IP网络，DiffServ，保证转发，视频流，H.264
In this paper we present a method for streaming video generated by the state-of-the-art H.264 codec over IP networks supporting the Differentiated Services (DiffServ) architecture, in particular the Assured Forwarding (AF) per-hop behavior. The scheme takes advantage of both AF’s packet drop priorities and some novel features of the H.264 codec, so as to protect the most important information in terms of visual quality and reduce distorsion under network congestion. The proposed method is evaluated by means of the H.264 reference software codec, network simulation and objective video quality measurements. Our results show that the proposed method allows to achieve a higher quality than traditional best-effort streaming. Key-words: IP networks, DiffServ, Assured Forwarding, video streaming, H.264.