An Application-Independent Multimedia Adaptation Framework Using Only Minimum Unit Transcoder Set

Sungmi Chon; DongYeop Ryu; Young-Hwan Lim

Journal of The Korea Society of Computer and Information

Abbr : JKSCI
2006, 11(6), pp.227-236
Publisher : The Korean Society Of Computer And Information
Research Area : Computer Science

Sungmi Chon ¹, DongYeop Ryu ², Young-Hwan Lim ³

¹숭실대학교
²숭실대학교
³숭실대학교

ABSTRACT

MPEG-21’s digital item adaptation technology becomes a new way for universal multimedia access. It needs transcoder to change media resource’s format and so on according to delivery context. Then, the use of heavy transcoder with various transcoding functions integrated into one altogether is so complicated and difficult in supporting universal multimedia access. Unit transcoder is useful is to resolve this question, in which a transcoder has only one transcoding function. This requires considering how to compose a set of unit transcoders. Thus, given a set for end-to-end different service quality pairs according to the character of application as defined by user, this study suggests how to compose complete unit transcoders that can always create one and more transcoding path(s) for each pair in the set. This method has a question of creating too many transcoding paths for each pair of end-to-end different service quality. Thus, this study also suggests the algorithm that generates minimum unit transcoder sets to support multimedia adaptation with minimum unit transcoder. The algorithm suggested was implemented into multimedia stream engine, and this paper describes the results of experiment for this algorithm.
KEYWORDS

디지털 아이템 적응(Digital Item Adaptation), MPEG-21, 트랜스코더(transcoder), 트랜스코딩(transcoding)
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