Study of Minimum Video Quality Guarantee of High Definition-Level Video in IPTV Multicasting Service

Objectives: To analyze the major factors affecting the quality of video on the multicasting service of HD (High Definition)- level video on Internet Protocol Television (IPTV). Methods/Statistical Analysis: We construct a lab test network environment similar to the real IPTV service network environment and measure the quality of video on the multicasting of HD-level video in IPTV, generating and increasing broadcast traffic in a situation that either applies the Quality of Service (QoS) technique to the network or does not apply the QoS technique. Findings: We discover the threshold value of factors allowing a minimum video quality guarantee on an HD-level multicasting service in IPTV. In order to produce a quality of received images similar to that of the original images and without distortion, the V-Factor value should be 4.6 or higher. When the V Factor value is 4.3, a viewer does not recognize errors in the video, although partial distortion can be displayed. Below a 4.3 V Factor, distortion can be recognized by a viewer, which makes watching IPTV uncomfortable, and with a V Factor below 4.0, IPTV watching is difficult. Application/Improvements: This paper can be used as basic data to guaranteeing this minimum video quality for an HD-level multicasting service in IPTV.