A method for streaming data corresponding to one or more media items or combinations of media items, said media items or combinations of media items being organized into time periods. The method includes transmitting a description file to a client device, said description file being organized into data boxes, each one being related to a time period, at least one box comprising one or more level-one sub-boxes comprising parameters related to a media item or combination of media items for the given time period, each level-one sub-box being organized into one or more level-two sub-boxes dedicated to temporal segments of the corresponding media item or combination of media items for the given time period, each level-two sub-box being organized into one or more level-three sub-boxes, each one being related to a portion of the temporal segment for the given media item or combination of media items.