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Proceedings Paper

QBIX-G: a transcoding multimedia proxy
Author(s): Peter Schojer; Laszlo Böszörmenyi; Hermann Hellwagner
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Paper Abstract

An adaptive multimedia proxy is presented which provides (1) caching, (2) filtering, and (3) media gateway functionalities. The proxy can perform media adaptation on its own, either relying on layered coding or using transcoding in the decompressed domain. A cost model is presented which incorporates user requirements, terminal apabilities, and video variations in one formula. Based on this model, the proxy acts as a general broker of different user requirements and of different video variations. This is a first step towards What You Need is What You Get (WYNIWYG) video services, which deliver videos to users in exactly the quality they need and are willing to pay for. The MPEG-7 and MPEG-21 standards enable this in an interoperable way. A detailed evaluation based on a series of simulation runs is provided.

Paper Details

Date Published: 16 January 2006
PDF: 16 pages
Proc. SPIE 6071, Multimedia Computing and Networking 2006, 60710C (16 January 2006); doi: 10.1117/12.643084
Show Author Affiliations
Peter Schojer, Klagenfurt Univ. (Austria)
Laszlo Böszörmenyi, Klagenfurt Univ. (Austria)
Hermann Hellwagner, Klagenfurt Univ. (Austria)


Published in SPIE Proceedings Vol. 6071:
Multimedia Computing and Networking 2006
Surendar Chandra; Carsten Griwodz, Editor(s)

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