FIELD: physics, video.
SUBSTANCE: invention relates to means of storing and transporting encoded video data. The method includes assembling encoded video data into a video file fragment comprising sub-track fragments, which comprise a plurality of hierarchically related encoded video images of the encoded video data, arranged continuously in the decoding order within a corresponding sub-track fragment, wherein the hierarchically related encoded video images each correspond to a common hierarchical layer; outputting data; receiving a request in accordance with a streaming protocol which specifies the sub-track fragment. In the method, the request comprises a hypertext transfer protocol (HTTP) partial GET request which specifies a byte range corresponding to the sub-track fragment; outputting the hierarchically encoded video images of the sub-track fragment.
EFFECT: retrieving encoded images of a specific hierarchical layer in a video fragment using a single request.
44 cl, 9 dwg, 3 tbl
