Method and apparatus for video coding

An apparatus for video coding, comprising:

• processing circuitry configured to
• receive a first indicator that indicates whether affine motion compensation is used for inter prediction in a video coding sequence;
• receive a second indicator that indicates an affine motion compensation type based on the affine motion compensation being used for the inter prediction in the video coding sequence;
• determine that the affine motion compensation type is one of a plurality of affine motion compensation types based on the received second indicator, the plurality of affine motion compensation types including a 4-parameter affine motion compensation model and a combination of the 4-parameter affine motion compensation model and a 6-parameter affine motion compensation model;
• based on the affine motion compensation type being determined to be the combination of the 4-parameter affine model and the 6-parameter affine motion compensation model, determine which of the 4-parameter affine motion compensation model and the 6-parameter affine motion compensation model is used to generate prediction samples for a coding unit based on a received third indicator;
• and
• reconstruct at least one sample of a current block based on the third indicator.

A non-transitory computer-readable medium storing instructions that, when executed by a processing circuit, cause the processing circuit to perform a method for video coding, the method comprising:

• receiving a first indicator that indicates whether affine motion compensation is used for inter prediction in a video coding sequence;
• receiving a second indicator that indicates an affine motion compensation type based on the affine motion compensation being used for the inter prediction in the video coding sequence;
• determining that the affine motion compensation type is one of a plurality of affine motion compensation types based on the received second indicator, the plurality of affine motion compensation types including a 4-parameter affine motion compensation model and a combination of the 4-parameter affine motion compensation model and a 6-parameter affine motion compensation model;
• based on the affine motion compensation type being determined to be the combination of the 4-parameter affine motion compensation model and the 6-parameter affine motion compensation model, determining which of the 4-parameter affine motion compensation model and the 6-parameter affine motion compensation model is used to generate prediction samples for a coding unit based on a received third indicator;
• and
• reconstructing at least one sample of a current block based on the third indicator.