QBIX-G: a transcoding multimedia proxy | Zendy

Peter Schojer | Zendy; László Böszörményi | Zendy; Hermann Hellwagner | Zendy

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QBIX-G: a transcoding multimedia proxy

Author(s) -

Peter Schojer,

László Böszörményi,

Hermann Hellwagner

Publication year - 2006

Publication title -

proceedings of spie, the international society for optical engineering/proceedings of spie

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.192

H-Index - 176

eISSN - 1996-756X

pISSN - 0277-786X

DOI - 10.1117/12.643084

Subject(s) - transcoding , computer science , proxy (statistics) , interoperability , multimedia , coding (social sciences) , computer network , world wide web , statistics , mathematics , machine learning

Due to the increasing availability of audio/visual data on the Internet, proxy caching is gaining on importance as a per- formance factor. This increase is accompanied by a diversi- flcation in the end terminals, which calls for media gateways and fllters. An adaptive proxy is presented which performs (1) caching, (2) flltering and (3) media gateway functionality in one. The proxy can perform media adaptation { using transcoding { on its own. A cost model is presented which incorporates user requirements, terminal capabilities and video variations in one formula. Based on this model, the proxy acts as a general broker of difierent user requirements and of difierent video variations. This is a flrst step towards What You Need is What You Get (WYNIWYG) video services, which deliver videos to users in exactly that quality what they need and what they want to pay for. The MPEG-7 and MPEG-21 standards enables this in an interoperable way. A detailed evaluation based on a series of measurements is provided.

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