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Besides, providing an insight of video coding mechanisms, traffic models can be used as a tool for the allocation of network resources, the design of efficient networks for streaming services and the reassurance of specific QoS characteristics to the end users. The new H.264\/AVC standard, proposed by the ITU-T Video Coding Expert Group (VCEG) and ISO\/IEC Moving Pictures Expert Group (MPEG), is expected to dominate in upcoming multimedia services, due to the fact that it outperforms in many fields the previous encoded standards. This article presents both a frame and a layer (i.e. I, P and B frames) level analysis of H.264 encoded sources. Analysis of the data suggests that the video traffic can be considered as a stationary stochastic process with an autocorrelation function of exponentially fast decay and a marginal frame size distribution of approximately Gamma form. Finally, based on the statistical analysis, an efficient model of H.264 video traffic is proposed.<\/p>","DOI":"10.4018\/jmcmc.2009072802","type":"journal-article","created":{"date-parts":[[2010,4,30]],"date-time":"2010-04-30T09:09:46Z","timestamp":1272618586000},"page":"14-31","source":"Crossref","is-referenced-by-count":5,"title":["Analysis and Modeling of H.264 Unconstrained VBR Video Traffic"],"prefix":"10.4018","volume":"1","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0486-2700","authenticated-orcid":true,"given":"Harilaos","family":"Koumaras","sequence":"first","affiliation":[{"name":"Business College of Athens (BCA), Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Charalampos","family":"Skianis","sequence":"additional","affiliation":[{"name":"University of Aegean, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anastasios","family":"Kourtis","sequence":"additional","affiliation":[{"name":"Institute of Informatics and Telecommunications NCSR, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2432","reference":[{"key":"jmcmc.2009072802-0","doi-asserted-by":"crossref","unstructured":"Alheraish, A. 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