With advances in broadband IP networks and codec technologies, IPTV services have become popular. Because IPTV services should be planned and managed based on QoE (Quality of Experience) it is desirable to develop an objective quality assessment model for estimating QoE of IPTV services. In this paper, for the purpose of QoE management, we propose a hybrid video quality assessment model that uses video signals and IP packet headers obtained at a client terminal. Quality estimation accuracy of our model is sufficient in practical use of QoE management for IPTV services.