Exteneded Multimedia File Structure and Multimedia File Producting Method and Multimedia File Executing Method

An object of the present invention is a multimedia file of the same format to provide a multimedia file format structure expansion, which may include a media resource, a multimedia file in accordance with the present invention, made of a metadata section and a media data area, and the meta the data area is the field defining the media object; And a plurality of track pointer, wherein the media data field includes a plurality of media blocks, each track the pointer points to. Here, at least one of the track pointers is characterized in that it can access the detail media resource contained in an internal or an external multimedia file. According to the invention, in particular, by standardizing the location information of the detail media resource of the sub-file to be built in MPEG4 MPEG4 file format, there is an effect that enables an efficient access to and playback of the media resource. Media resources, MPEG4, addressing metadata, multimedia