FIELD: information technology.
SUBSTANCE: group of inventions relates to video encoding and decoding and, in particular, to entropy- encoding and decoding of syntax elements forming video data. Method of video encoding includes: encoding a video on the basis of a hierarchical data unit; determining a context model for entropy- encoding a syntax element of the data unit, on the basis of a second syntax element; and entropy- encoding the syntax element using the defined context model.
EFFECT: to reduce the number of memory accesses and memory capacity to store syntax elements through the use of the context model for entropy- encoding of the first syntax element, using the second syntax element that is used in the current encoding unit.
15 cl, 26 dwg, 1 tbl
