@TechReport{Karpati2005, author = {Karpati, Peter and Szkaliczki, Tibor and Böszörmenyi, Laszlo}, institution = {Institute of Information Technology ({ITEC}), Klagenfurt University}, title = {Mathematical model for distributed VoD servers}, year = {2005}, address = {Klagenfurt, Austria}, month = {jan}, abstract = {Universal Multimedia Access (UMA) has become a driving concept behind a significant amount of research activities. One of MPEG’s (Moving Pictures Experts Group) responses to UMA is MPEG-21 Digital Item Adaptation (DIA). In this paper we present how tools as specified within DIA (i.e., normative XML-based description formats) are applied in streaming and constrained environments enabling piece-wise multimedia content adaptation including the adaptation decision-taking process and the actual resource adaptation in a coding format-independent way. Additionally, we demonstrate how the metadata overhead imposed by DIA tools can be reduced by means of appropriate metadata encoding tools.}, language = {EN}, pages = {115}, series = {TR/ITEC/05/2.13} }