Extra-long tap deblocking

A method for deblocking, the method comprising:

• checking whether a size of a current block exceeds a size threshold;
• checking whether a size of an adjacent block exceeds the size threshold, wherein the adjacent block is adjacent to a boundary of the current block;
• determining that a criteria is true, wherein the criteria comprises both a size of the current block and a size of the adjacent block exceeding the size threshold;
• and
• as a result of determining that the criteria is true, applying a long-tap deblocking across the boundary of the current block, wherein a length of the long-tap deblocking is greater than 7.

An encoder configured to deblock, the encoder comprising:

• a processor;
• and
• a memory, the memory containing instructions executable by the processor, whereby the encoder is configured to:
• check whether a size of a current block exceeds a size threshold;
• check whether a size of an adjacent block exceeds the size threshold, wherein the adjacent block is adjacent to a boundary of the current block;
• determine that a criteria is true, wherein the criteria comprises both a size of the current block and a size of the adjacent block exceeding the size threshold;
• and
• as a result of determining that the criteria is true, apply a long-tap deblocking across the boundary of the current block, wherein a length of the long-tap deblocking is greater than 7.

A decoder configured to deblock, the decoder comprising:

• a processor;
• and
• a memory, the memory containing instructions executable by the processor, whereby the decoder is configured to:
• check whether a size of a current block exceeds a size threshold;
• check whether a size of an adjacent block exceeds the size threshold, wherein the adjacent block is adjacent to a boundary of the current block;
• determine that a criteria is true, wherein the criteria comprises both a size of the current block and a size of the adjacent block exceeding the size threshold;
• and
• as a result of determining that the criteria is true, apply a long-tap deblocking across the boundary of the current block, wherein a length of the long-tap deblocking is greater than 7.