Abstract: A method and apparatus for providing a video-on-demand (VOD) service are provided.

Abstract: There is provided a user device for providing customized contents, including: a data receiving unit for receiving user multimedia data from outside; an authoring information setting unit for setting user authoring information on the user multimedia data upon a user's request; a data encoding unit for encoding the user multimedia data and the user authoring information to generate contents data; a data transmission unit for transmitting the generated contents data to a customized contents authoring device through a network; a data receiving unit for receiving authorized data transmitted from the customized contents authoring device; and a data output unit for extracting the customized contents data from the received customized data and outputting the extracted contents data.