FIELD: information technology.
SUBSTANCE: invention relates to processing video data. Method of decoding a video stream by means of a decoder includes: obtaining access to an image of base level; obtaining an image cutting flag in video stream, which indicates presence of cutting offset parameters; and in response to obtaining an image cutting flag, which indicates presence of cutting offset parameters, obtaining access to cutting offset parameters, cutting one or more regions of image of base level in accordance with cutting offset parameters, access to which is obtained for generating a clipped reference image; and generating a reference image for expansion level in accordance with clipped reference image.
EFFECT: efficient decoding of video streams.
18 cl, 11 dwg, 9 tbl
