Around 1994-1995, advent of commercial ISP (Internet Service Provider) accelerated the Internet use explosively among people. However, since the current narrowband residential access infrastructure using, dialup is too slow, new broadband Internet services are in process of deployment in network infrastructure to satisfy user's demand. This broadband Internet service has potential to deliver various types of multimedia data including video. Even though the network bandwidth becomes broader, the Internet traffic is naturally unpredictable so that QoS (Quality of Service) of multimedia data has to be controlled according to changing communication environment. This report provides experimental data that relate video QoS with user's satisfaction to conduce to the QoS control mechanism.