MPEG- l /MRP:实现交互式互联网应用程序的自适应MPEG视频流

Susanne CJ Boll, W. Klas, M. Menth, C. Heinlein
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引用次数: 7

摘要

现有的多媒体流媒体技术没有为用户交互提供具体的支持,比如在视频中跳转到书签,或者切换到反向播放。例如,当用户跳转到一个书签时,播放器向服务器请求新的呈现点帧,只有当数据到达时才继续播放。我们对这个问题的解决方案是客户端预取缓冲策略,MPEG-L/MRP,它确保响应可能的用户交互所需的帧已经在客户端的缓冲区中,这导致对用户交互的快速和平滑的反应。在可变带宽的情况下,我们的MPEG-1流方法只选择从服务器获取的所有帧的子集,并以正确的时间轴以降低的帧率支持平滑的呈现。技术演示演示了mpeg视频的交互式流,并说明了我们的缓冲和预取策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
MPEG-L/MRP: implementing adaptive streaming of MPEG videos for interactive internet applications
Existing multimedia streaming technologies offer no specific support for user interaction like jumping to bookmarks in a video, or switching to reverse play. When the users, e.g., jump to a bookmark, the player requests frames for the new presentation point from the server and resumes playing only when the data has arrived. Our solution for this problem is the client prefetching the buffering strategy, MPEG-L/MRP, that ensures that the frames which are needed for a response to a possible user interaction are already in the client's buffer, which leads to qucik and smooth reaction to user interactions. In case of variable bandwidth, our MPEG-1 streaming approach selects only a subset of all frames to be fetched from the server and supports a smooth presentation at a reduced frame rate with correct timelines.The technical demonstration shows the interactive streaming of MPEG-videos and illustrates our buffering and prefetching strategy.
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