Content playing system

A content delivery method for application to a content playing system comprising a plurality of terminal devices and a content delivery system, the method comprising:

• acquiring a content data denoting a content and having a first format by the content delivery system;
• converting the format of the acquired content data from the first format into a second format different from the first format by the content delivery system;
• sending a transmission request for requesting to send the content data denoting the content to the content delivery system by the terminal device;
• receiving the transmission request from the terminal device by the content delivery system;
• sending the content data having the first format or the content data having the second format by the content delivery system to the terminal device which sent in the transmission request when the transmission request was received;
• receiving the content data from the content delivery system by the terminal device;
• playing the content denoted by the received content data by the terminal device;
• acquiring, when the terminal device has stopped playing the content, stop position information denoting the stopped position by the content delivery system;
• and
• in the case of receiving, after one of the plurality of terminal devices has stopped playing the content, the transmission request sent by another one of the plurality of terminal devices, sending the content data to the other terminal device from the position denoted by the acquired stop position information, by the content delivery system.

A content delivery system configured to be communicable with each of a plurality of terminal devices, the system comprising:

• a content data acquisition unit for acquiring a content data denoting a content and having a first format;
• a content data conversion unit for converting the format of the acquired content data from the first format into a second format different from the first format;
• a transmission request receiving unit for receiving a transmission request for requesting to send the content data from the terminal device;
• a content data sending unit for, when the transmission request was received, sending the content data having the first format or the content data having the second format to the terminal device which sent in the transmission request;
• and
• a stop position information acquisition unit for, when the terminal device has stopped playing the content, acquiring stop position information denoting the stopped position,
• wherein the content data sending means is configured to, in the case of receiving, after one of the plurality of terminal devices has stopped playing the content, the transmission request sent by another one of the plurality of terminal devices, send the content data to the other terminal device from the position denoted by the acquired stop position information.