Providing VCR functionality in staggered video broadcasting
Providing VCR functionality in staggered video broadcasting
复制标题
在交错视频广播中提供 VCR 功能
DOI：
10.1109/tce.2002.1010090
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
H. Yeom
中科院分区：
文献类型：
--
作者：
J. Kwon;H. Yeom
真正的视频点播（TVoD）系统允许用户在任何时间观看任何视频节目，并执行任何VCR功能，但其每个用户的视频传送成本非常昂贵。准视频点播（NVoD）系统通过将多个客户端接入到广播视频的共享流来使用更具可扩展性的方法。交错视频广播是NVoD技术之一，它在交错的时间广播同一视频的多个流，其中一个流服务于多个客户端。为了向用户提供高质量的VoD服务，希望增加VCR功能，例如快进和快退，但是在NVoD中提供VCR功能是不容易的，特别是在没有专用或交互式频道可用的视频广播系统中。我们分析了必要的条件，提供VCR功能，然后提出了一个接收时间表，满足这些条件，以最小的资源需求。由于我们所提出的方案接收视频帧为单位，它可以迅速维持不断变化的VCR动作模式。它表明，通过模拟，该计划提供VCR功能始终与最小的缓冲区空间。
A true video-on-demand (TVoD) system allows users to view any video program, at any time, and perform any VCR function, but its per-user video delivery cost is very expensive. A near video-on-demand (NVoD) system uses a more scalable approach by batching multiple clients to a shared stream of broadcasting videos. Staggered video broadcasting, one of the NVoD techniques, broadcasts multiple streams of the same video at staggered times, with one stream serving multiple clients. In order to provide subscribers with a high-quality VoD service, it is desirable to add VCR functionality, such as fast forward and fast rewind, but it is not easy to provide VCR functionality in NVoD, especially a video broadcasting system where no dedicated or interactive channel is available. We analyze the conditions necessary to provide VCR functions and then propose a reception schedule that satisfies these conditions, with minimal resource requirements. Since our proposed scheme receives video frames as units, it can rapidly sustain a changing VCR action pattern. It is demonstrated, by simulation, that the scheme provides VCR functionality consistently with minimal buffer space.