As digital broadcasting services have been rapidly deployed, many service operators are considering more effective transmission of digital broadcasting services. Recently, the digital broadcasting services have been changed to use resources efficiently and transmits them to easily accommodate the consideration varying needs and environments of subscribers. Therefore, it is necessary to redefine the advanced IP-based Digital Video Convergence Service for maintaining QoS (Quality of Service) and using bandwidth effectively transmission on broadband network environment. The IP-based Digital Video Convergence Service is a service mechanism for distributing digital video via IP-based broadband networks. It is the service mechanism for providing interfaces and functionalities to enable the service operators to offer quality of service (QoS)-guaranteed broadcasting to subscribers via IP-based converged broadband networks. This Recommendation aims to define the functional specification of IP-based Digital Video Convergence Service considering the convergence environment.