Real-time DVB-based MPEG-21 Digital Item Adaptation for live Universal Multimedia Access

M. Prangl, C. Timmerer, H. Hellwagner
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引用次数: 1

Abstract

In order to enable transparent and augmented use of multimedia content across a wide range of networks and devices, content adaptation is an important issue within multimedia frameworks. In this paper, we present a prototype application that receives digital video broadcast (DVB) TV streams on a PC, transcodes the streams on the fly according to the individual user requirements and packs the adapted content together with available metadata into a standard compliant MPEG-21 digital item (DI). In this form, the framework enables the live universal multimedia access (UMA) scenario where the DVB content can be transparently accessed by clients such as PCs and PDAs, anytime and anywhere
面向实时通用多媒体访问的基于dvb的MPEG-21数字项目适配
为了在广泛的网络和设备上实现多媒体内容的透明和增强使用,内容适应是多媒体框架中的一个重要问题。在本文中,我们提出了一个原型应用程序,它在PC上接收数字视频广播(DVB)电视流,根据个人用户的需求动态地对流进行转码,并将改编的内容与可用的元数据一起打包成符合标准的MPEG-21数字项目(DI)。在这种形式下,该框架可以实现实时通用多媒体访问(UMA)场景,其中DVB内容可以被客户端(如pc和pda)随时随地透明地访问
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