Quantification of Quality-Of-Presentations (QOPs) for. Multimedia Synchromzatlon Schemes* Chung-Ming Huang and Ruey-Yang Lee Laboratory of Multimedia Networking (LMN) Institute of Information Engineering National Cheng Kung University Tainan, Taiwan 70101 R.O.C. Abstract Storing different numbers of media units in advance can guarantee different levels of synchronization qualities. That is, allocating some buffers at the receive client site can smooth intra/inter asynchrony anomalies, which are the side effects of delay jitters. Additionally, the commencement of a multimedia presentation can be smoothly invoked after a pre-defined number of media units has been stored in each medium stream's buffer. To maintain synchronization qualities, video streams can adopt the non-blocking or the restricted blocking synchronization scheme, and audio streams can adopt the blocking synchronization scheme. In this paper, we derive mathematical relationships among associated parameters such that Quality Of Presentations (QOPs), i.e., intra-medium and inter-media asynchrony anomalies, for live continuous multimedia presentations can be analyzed. Using the mathematical analysis, trade-offs between QOPs and networking/system resources can be identified. Keywords: Multimedia Synchronization, Live Media Presentations, Quality Of Presentations (QOPs), Inter-media Synchronization, Intra-media Synchronization. *The research is supported by the National Science Council of the Republic of China under the grant NSC 85-2213-E-006-062. Correspondence: huangcm@locust.iie.ncku.edu.tw.
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