Even with the ongoing growth of video sharing services, only 10% of its users have uploaded contents. In current video sharing services, almost all users only watch somebody's uploaded video and discuss their impressions. Communities in the services can be revitalized if the users can communicate their intentions directly via video contents. To address this issue, we use a novel system to make their video with their intentions without breaking original video sources. The system enables users to record their RoI (Region of Interests) information in scenario form and they can reproduce their RoI easily. Scenarios are raw user logs and once they are obtained, it is possible to extract much useful information from them. We have introduced a new measure, interest degree, to find a scenario with common RoIs of the community. In this paper, validity of our proposal and of the measure are evaluated.