OYEKANLU Emmanuel Adebomi; JOHN Samson Mwela MEE10:44, pp. 40. COM/School of Computing, 2010.
In this thesis, the impact of packet losses on the quality of received videos
sent across a network that exhibit normal network perturbations such as jitters, delays, packet
drops etc has been examined.
Dynamic behavior of a normal network has been simulated using Linux and
the Network Emulator (NetEm). Peoples’ perceptions on the quality of the received video
were used in rating the qualities of several videos with differing speeds.
In accordance with ITU’s guideline of using Mean Opinion Scores (MOS),
the effects of packet drops were analyzed. Excel and Matlab were used as tools in analyzing
the peoples’ opinions which indicates the impacts that different loss rates has on the
transmitted videos. Statistical methods used for evaluation of data are mean and variance.
We conclude that people have convergence of opinions when losses become
extremely high on videos with highly variable scene changes