FIELD: video data processing.
SUBSTANCE: invention relates to video encoding tools. A network abstraction layer (NAL) unit of the video data encoding layer (VCL) is obtained. It is determined whether the VCL NAL unit is the first VCL NAL unit of the picture unit (PU) containing the VCL NAL unit. The VCL NAL unit is herein defined as the first VCL NAL unit of said PU based on determining that the VCL NAL unit is the first VCL NAL unit following the NAL unit of the picture header. Based on determining that the VCL NAL unit is the first VCL NAL unit of said PU and determining that the least significant bit of the VCL NAL unit picture sequence counter differs from the least significant bit of the picture sequence counter for the previous image, it is determined whether the VCL NAL unit is the first VCL NAL unit of the access unit (AU) containing the PU. Based on determining that the VCL NAL unit is the first VCL NAL unit of said AU, the AU is decoded based on the VCL NAL unit.
EFFECT: increased efficiency of video encoding.
7 cl, 9 dwg
