FIELD: information technologies.
SUBSTANCE: information is sent from coder device to coder device, which identifies the coding tables with alternate length to be used for decoding of two or more different types of video units. Information may be sent once per frame (or other coded unit) and may identify the first table to be used for intra-coded units, and the second table to be used for inter-coded units of appropriate frame; decoder selects table on the basis of this information and decodes various types of video units, using selected table for each type of unit.
EFFECT: improved efficiency of coding of transformation ratios, in particular in coding with alternate length of coefficients of SVC circuit expansion level detailing.
25 cl, 8 dwg
