| 摘要 |
PROBLEM TO BE SOLVED: To improve the advertisement effect of advertisement videos of a video delivery system. SOLUTION: When some client makes a request for a delivery of video data, the advertiser of the video data is decided by using a video information management table 150 provided in a server 100, an advertisement, information management table 155 provided for each client is used to detect whether or not there are advertisement videos specified by the advertiser for the client in advance, and when so, the detected videos are delivered to the client instead of advertisement videos attached to the video data, thereby making the advertisement with clients. A viewer is enabled to view the advertisement videos in advance and for that, a viewing completion flag is set in the advertisement management table 155; when the video data are viewed, the viewing of the advertisement videos is skipped for the client.
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