Abstract: A video data service system includes a web server for providing a web page which authenticates a member as a copyright holder and registers the member as a first member; an encoding server for inserting an identifier representing the copyright holder corresponding to the first member into first format video data uploaded from the first member, and for encoding the first format video data into second format video data; a media file server for storing therein the encoded second format video data; and a database server for storing therein first member information inputted by the first member and link information for accessing the second format video data on a web. The link information is transmitted to a video data distribution system through the web server.