Method and device for managing content, storage medium, and adaptive content playing method using the same

摘要

A content management method includes transmitting content from a content provider device (120) to a client device (130, 140) over a predetermined network (110); and adding additional information comprising original content location information of the content transmitted to the client device (130, 140) and elapsed playing time information of the content. A content management device (130, 140) includes a communication module (120-1, 130-1) which transmits content to, receives content from, or transmits content to and receives content from a device connected over the predetermined network (110); an additional information edit processing unit (130-4) which generates additional information comprising original content location information of the content transmitted by the communication module (120-1) and elapsed playing time information of the content, and inserts the additional information into the transmitted content; and a storage unit (130-3) which stores the content into which the additional information has been inserted.