Abstract
Video streaming has become an immensely effective technique to share videos over the internet. It is being widely used for video conferencing, e-learning, TV broadcasting, voice over IP and in different multimedia applications. The userâs quality of experience for watching the video is most important for service providers primarily for providing a smooth usersâ experience. However, a number of factors affect video streaming quality such as delay and distortion in the network which affects userâs perception of the quality of received videos. It is essential to ascertain the factors which can minimize the effects of these factors on video quality and ensure an adequate level of video streaming quality. In this paper, we try to find out the effect of packet duplication and rate control on usersâ experience in the simulated videos. We try to evaluate the quality of experience perceived by the users and analyze the results using a mean opinion score obtained from different surveys conducted on usersâ experience on video streaming. Our in-depth analysis of usersâ experience about video streaming shows that the usersâ opinion about a video quality follows a similar trend. From our analysis, we were able to estimate a threshold level 1536kbit/s for bit rate and packet duplication level on 3.5%, which represent satisfactory levels of usersâ experience, given the constraints of network bandwidth. Our analysis and proposed solutions for maintaining and adjusting appropriate/affordable settings of bit rate and packet duplication are helpful for the service providers to deliver a smooth user experience.
Keyword(s)
Video Streaming, VoIP, Network Bandwidth, Video over Internet, video conferencing, QoE