Block size restriction for illumination compensation

An apparatus for coding video data, the apparatus comprising:

• at least one memory;
• and
• one or more processors implemented in circuitry and configured to:
• obtain a block of a picture of video data;
• determine a size of the block;
• determine whether the size of the block is equal to or less than a first block size associated with a block size restriction that restricts bi-directional inter-prediction for blocks having a respective size that is equal to or less than the first block size associated with the block size restriction or whether the size of the block is greater than a second block size associated with a video coding pipeline structure:
• determine that the size of the block is one of equal to or less than the first block size associated with the block size restriction or greater than the second block size associated with the video coding pipeline structure;
• and
• based on the determination that the size of the block is one of equal to or less than the first block size associated with the block size restriction or greater than the second block size associated with the video coding pipeline structure, disable illumination compensation for the block.

A non-transitory computer-readable medium having stored thereon instructions that, when executed by one or more processors, cause the one or more processors to:

• obtain a block of a picture of video data;
• determine a size of the block;
• determine whether the size of the block is equal to or less than a first block size associated with a block size restriction that restricts bi-directional inter-prediction for blocks having a respective size that is equal to or less than the first block size associated with the block size restriction or whether the size of the block is greater than a second block size associated with a video coding pipeline structure;
• determine that the size of the block is one of equal to or less than the first block size associated with the block size restriction or greater than the second block size associated with the video coding pipeline structure;
• and
• based on the determination that the size of the block is one of equal to or less than the first block size associated with the block size restriction or greater than the second block size associated with the video coding pipeline structure, disable illumination compensation for the block.