Patent ID: 7725593

Claim:
A method of extracting a data stream from a modified file format implemented on a device including a memory, the method comprising: a. receiving a request for a specific data stream from an end user device, wherein the request includes one or more device requirements; b. associating the request with a specific scalable data stream stored in a media data section of the modified file format, the scalable data stream comprising a series of access units and a plurality of sub-layer data streams; c. determining one or more tracks corresponding to the specific scalable data stream, wherein the one or more tracks are stored within the memory in a metadata section of the modified file format, further wherein each track comprises one or more metadata boxes, wherein the one or more metadata boxes comprise extensions to the Scaling Video Coding (SVC) file format standards; d. determining a sub-layer data stream of the specific scalable data stream according to the one or more device requirements, wherein the sub-layer data stream is determined using the one or more metadata boxes; e. extracting the sub-layer data stream from the stored scalable data stream; f. transmitting the extracted sub-layer data stream; g. decoding the determined one or more tracks prior to determining the sub-layer data stream; h. configuring the one or more metadata boxes to define one of a plurality of description entries according to the one or more device requirements; i. configuring the one or more metadata boxes to define a sub-set of access units according to the selected description entry, wherein the defined sub-set of access units comprises the sub-layer data stream; j. storing within the memory an encoded version of the scalable data stream in the media data section; and k. configuring the one or more metadata boxes to define a hint track associated with the sub-layer data stream, wherein the sub-layer data stream comprises an Advanced Video Coding (AVC) compatible base layer stream.