360BroadView: Viewer Management for Viewport Prediction in 360-Degree Video Live Broadcast
360BroadView: Viewer Management for Viewport Prediction in 360-Degree Video Live Broadcast
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DOI：
10.1145/3551626.3564939
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发表时间：
2022-12
期刊：
影响因子：
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通讯作者：
Qian Zhou;Zhe Yang;Hongpeng Guo;Beitong Tian;K. Nahrstedt
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文献类型：
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作者：
Qian Zhou;Zhe Yang;Hongpeng Guo;Beitong Tian;K. Nahrstedt
360-通过视频点播和直播服务，度视频正在成为我们内容消费的一个组成部分。然而，如果所有360度视图都通过不同的网络传送给大量观众，由于巨大的网络带宽成本，直播仍然具有挑战性。在本文中，我们提出了360BroadView，观众管理方法，在360度视频直播的视口预测。我们让一些高带宽的网络观看者成为领先的观看者，以帮助其他人（落后的观看者）在360度视频观看期间预测视口并节省带宽。我们的观众管理保持领先的观众群体，尽管观众在直播期间流失，使系统保持正常运行。我们的评估表明，360BroadView在97%的时间内将领先的观众人数保持在最低但必要的水平。
360-degree video is becoming an integral part of our content consumption through both video on demand and live broadcast services. However, live broadcast is still challenging due to the huge network bandwidth cost if all 360-degree views are delivered to a large viewer population over diverse networks. In this paper, we present 360BroadView, a viewer management approach to viewport prediction in 360-degree video live broadcast. We make some high-bandwidth network viewers be leading viewers to help the others (lagging viewers) predict viewports during 360-degree video viewing and save bandwidth. Our viewer management maintains the leading viewer population despite viewer churns during live broadcast, so that the system keeps functioning properly. Our evaluation shows that 360BroadView maintains the leading viewer population at a minimal yet necessary level for 97 percent of the time.