Method and apparatus for encoding or decoding video

An apparatus, comprising:

• a memory configured to store instructions;
• and
• a processor coupled to the memory and configured to execute the instructions to cause the apparatus to:
• receive a bitstream including a coding unit of a video frame, the coding unit being coded in a skip mode or a direct mode;
• determine whether the coding unit has a width greater than a threshold width or a height greater than a threshold height;
• in response to the coding unit having the width greater than the threshold width or the height greater than the threshold height, enable a motion vector angular prediction process to store one or more motion vector angular prediction candidates in a candidate list storing a plurality of motion candidates associated with the coding unit, wherein the candidate list is derived by:
• storing a temporal motion vector predictor as one of the motion candidates;
• storing a spatial motion vector predictor as one of the motion candidates;
• and
• storing the one or more motion vector angular prediction candidates as one or more of the motion candidates, in response to the enabled motion vector angular prediction process;
• and
• perform an inter prediction to the coding unit according to the candidate list and an index parsed from the bitstream.

A non-transitory computer-readable storage medium storing a set of instructions that are executable by one or more processors of a device to cause the device to perform a method for motion vector prediction, comprising:

• dividing a coding unit into a plurality of subblocks;
• filling a reference list associated with the coding unit by:
• filling a reference unit in the reference list with motion information of a neighboring block of the coding unit, if the motion information of the neighboring block associated with the reference unit is available;
• filling a first reference unit being a first entry in the reference list with a predefined motion information if the motion information of a first neighboring block associated with the first reference unit is unavailable;
• and
• filling a remaining reference unit with the motion information filled in a previous neighboring reference unit in the reference list if the motion information of the neighboring block associated with the remaining reference unit is unavailable;
• and
• performing a motion vector angular prediction process to obtain one or more motion vector angular prediction candidates for each subblock by using the reference list according to one or more prediction directions.