Block partitioning method and apparatus

An apparatus for processing video data comprising a processor and a non-transitory memory with instructions thereon, wherein the instructions upon execution by the processor, cause the processor to:

• determine, for a conversion between a current video block of a visual media data and a bitstream of the visual media data, whether an extended quad tree (EQT) partitioning process is applied to the current video block according to a rule;
• and
• perform the conversion based on the determination;
• wherein the EQT partitioning process splits the current video block into exactly four sub-blocks in response to the EQT partitioning process is applied to the current video block, wherein the four sub-blocks including at least one sub-block that has a dimension different from half of a width of the current video block times half of a height of the current video block, a first sub-block and a second sub-block of the four sub-blocks have a first dimension, a third sub-block and a fourth sub-block of the four sub-blocks have a second dimension,
• and wherein the rule specific that the EQT partitioning process is not applied to the current video block in a case that the current video block exceeds a border of a video region.

A non-transitory computer-readable storage medium storing instructions that cause a processor to:

• determine, for a conversion between a current video block of a visual media data and a bitstream of the visual media data, whether an extended quad tree (EQT) partitioning process is applied to the current video block according to a rule;
• and
• perform the conversion based on the determination;
• wherein the EQT partitioning process splits the current video block into exactly four sub-blocks in response to the EQT partitioning process is applied to the current video block, wherein the four sub-blocks including at least one sub-block that has a dimension different from half of a width of the current video block times half of a height of the current video block, a first sub-block and a second sub-block of the four sub-blocks have a first dimension, a third sub-block and a fourth sub-block of the four sub-blocks have a second dimension,
• and wherein the rule specific that the EQT partitioning process is not applied to the current video block in a case that the current video block exceeds a border of a video region.

A non-transitory computer-readable recording medium storing a bitstream of a visual media data which is generated by a method performed by a video processing apparatus, wherein the method comprises:

• determining, whether an extended quad tree (EQT) partitioning process is applied to a current video block of the visual media data according to a rule;
• and
• generating the bitstream based on the determining;
• wherein the EQT partitioning process splits the current video block into exactly four sub-blocks in response to the EQT partitioning process is applied to the current video block, wherein the four sub-blocks including at least one sub-block that has a dimension different from half of a width of the current video block times half of a height of the current video block, a first sub-block and a second sub-block of the four sub-blocks have a first dimension, a third sub-block and a fourth sub-block of the four sub-blocks have a second dimension,
• and wherein the rule specific that the EQT partitioning process is not applied to the current video block in a case that the current video block exceeds a border of a video region.