FIELD: video processing.
SUBSTANCE: invention relates to division into sub-images for synthesis with other sequences for packaging a bit stream. A video decoding method performed by a video decoding device is proposed, which includes the steps of: obtaining NAL unit type information indicating the type of the current Network Abstraction Layer (NAL) from the bit stream; and decode when the NAL unit type information indicates that the NAL unit type of the current NAL unit is encoded data for a slice of the picture, the slice being based on whether a mixed NAL unit type is applied to the current picture.
EFFECT: creation of a method for dividing into subimages for synthesis with other sequences and a method for dividing into slices for packing a bit stream.
7 cl, 20 dwg, 3 tbl
