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   Characteristics of video traffic from videoconference applications: From H.261 to H.264  
   
نویسنده domoxoudis s. ,kouremenos s. ,loumos v. ,drigas a.
منبع journal of computer networks and communications - 2013 - دوره : 2013 - شماره : 0
چکیده    This paper presents modelling results for h.26x video traffic generated by popular videoconference software applications. the analysis of videoconference data,that were measured during realistic point-point videoconference sessions,led us to the general conclusion that the traffic can be distinguished into two categories: unconstrained and constrained. in the unconstrained traffic,there is a direct relation between the encoder and the form of the frequency histogram of the frame-size sequence. moreover,for this type of traffic,strong correlations between successive video frames can be found. on the other hand,where bandwidth constraints are imposed during the encoding process,the generated traffic appears to exhibit similar characteristics for all the examined encoders with the very low autocorrelation values being the most notable one. on the basis of these results,this study proposes methods to calculate the parameters of a widely adopted autoregressive model for both types of traffic. © 2013 s. domoxoudis et al.
آدرس multimedia technology laboratory,school of electrical and computer engineering,national technical university of athens ntua,zographou 15780, Greece, national center for scientific research demokritos,institute of informatics and telecommunications,ag. paraskevi 15310, Greece, multimedia technology laboratory,school of electrical and computer engineering,national technical university of athens ntua,zographou 15780, Greece, national center for scientific research demokritos,institute of informatics and telecommunications,ag. paraskevi 15310, Greece
 
     
   
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