Video encoding method, video decoding method, video encoding device, video decoding device, and program

A video decoding method, implemented by a processor, including an entropy decoding step of entropy-decoding a quadtree split flag, a skip flag, a binary tree split flag, and a binary tree split direction flag, the video decoding method comprising:

• an entropy decoding control step of, in the case where the skip flag of a block of an end node in a quadtree structure indicates that the binary tree split flag succeeds, causing the entropy decoding step to entropy-decode the binary tree split flag and the binary tree split direction flag, and in the case where the skip flag of the block of the end node in the quadtree structure indicates that the binary tree split flag does not succeed, causing the entropy decoding step not to entropy-decode the binary tree split flag and the binary tree split direction flag.

A non-transitory computer readable information recording medium storing a video encoding program for causing a computer to execute a process including an entropy encoding process of entropy-encoding a quadtree split flag, a skip flag, a binary tree split flag, and a binary tree split direction flag,

• the video encoding program further causing the computer to execute, in the case where the skip flag of a block of an end node in a quadtree structure indicates that the binary tree split flag succeeds, entropy-encoding the binary tree split flag and the binary tree split direction flag, and in the case where the skip flag of the block of the end node in the quadtree structure indicates that the binary tree split flag does not succeed, not entropy-encoding the binary tree split flag and the binary tree split direction flag.

A non-transitory computer readable information recording medium storing a video decoding program for causing a computer to execute a process including an entropy decoding process of entropy-decoding a quadtree split flag, a skip flag, a binary tree split flag, and a binary tree split direction flag,

• the video decoding program further causing the computer to execute, in the case where the skip flag of a block of an end node in a quadtree structure indicates that the binary tree split flag succeeds, entropy decoding the binary tree split flag and the binary tree split direction flag, and in the case where the skip flag of the block of the end node in the quadtree structure indicates that the binary tree split flag does not succeed, not entropy decoding the binary tree split flag and the binary tree split direction flag.