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There are more and more users of mobile internet. In teaching system, as equipment used by each school is complicated and network heterogeneity constantly improves, users have higher and higher requirements for video service quality. However, traditional multimedia on demand website can only provide simple multimedia services and traditional multimedia system can no longer meet the increasing demand of users. Therefore, some infrastructures, system architecture and service ability should bedoi:10.3991/ijet.v11i05.5689 fatcat:empjgaenanae3fhqxv7kbqfyay