FIELD: physics.
SUBSTANCE: invention relates to video coding. Result is achieved by the fact that the video coding mechanism includes receiving an extracted bit stream, which is the result of a process of extracting a bit sub-stream from an input bit stream containing a set of sub-pictures. Extracted bit stream contains only a subset of sub-pictures of the input bit stream before the process of extracting the bit sub-stream. Flag from the extracted bitstream is set to indicate that sub-snapshot information relating to a subset of the sub-snaps is present in the extracted bitstream. One or more identifiers (ID) of sub-pictures for a sub-set of sub-pictures are obtained based on the flag. Subset of sub-pictures is decoded based on identifiers (ID) of the sub-pictures.
EFFECT: high coding efficiency.
20 cl, 10 dwg
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