赋能创意用户:基于http的个性化多路径非线性视频自适应流

Vengatanathan Krishnamoorthi, Patrik Bergström, Niklas Carlsson, D. Eager, A. Mahanti, N. Shahmehri
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引用次数: 13

摘要

本文介绍了一种新型系统的设计、实现和验证,该系统支持个性化、多路径、非线性视频的流和播放。与常规视频按顺序播放文件内容不同,我们的设计允许将底层(线性)视频的多个非线性视频序列拼接在一起,以任意个性化的顺序播放,并为客户提供多种路径选择。该设计结合了基于http的自适应流(HAS)和多路径非线性视频的思想。通过使用自定义元文件实现内容的个性化,该元文件与定义HAS结构的底层媒体和清单文件分开下载。用户界面的扩展允许将路径选择呈现给用户,并由用户做出选择。使用了新颖的缓冲区管理和预取策略,以确保无论客户端路径选择如何,即使在客户端将其选择推迟到最后一刻的情况下,也能实现无缝不间断的播放。我们的解决方案允许创意家庭用户轻松创建自己的多路径非线性视频,为新机会和媒体形式的无限可能性打开大门。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Empowering the creative user: personalized HTTP-based adaptive streaming of multi-path nonlinear video
This paper presents the design, implementation, and validation of a novel system that supports streaming and playout of personalized, multi-path, nonlinear video. In contrast to regular video, in which the file content is played sequentially, our design allows multiple nonlinear video sequences of the underlying (linear) video to be stitched together and played in any personalized order, and clients can be provided multiple path choices. The design combines the ideas of HTTP-based adaptive streaming (HAS) and multi-path nonlinear video. Personalization of the content is achieved with the use of a customized metafile, which is downloaded separately from the underlying media and the manifest file that defines the HAS structure. An extension to the user interface allows path choices to be presented to and made by the user. Novel buffer management and prefetching policies are used to ensure seamless uninterrupted playback regardless of client path choices, even under scenarios in which clients defer their choices until the last possible moment. Our solution allows creative home users to easily create their own multi-path nonlinear video, opening the door to an endless possibility of new opportunities and media forms.
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