Method and apparatus for video coding

An apparatus, comprising:

• processing circuitry configured to:
• determine a first intra prediction mode in a first set of intra prediction modes for a non-square block, the first set of intra prediction modes includes a specific number of wide angle intra prediction modes that are not in a second set of intra prediction modes for a square block, and the first set of intra prediction modes does not include a specific number of missing intra prediction modes that are in the second set of intra prediction modes;
• and
• code a first block according to the first intra prediction mode, wherein the first block is a non-square block,
• the specific numbers of the wide angle intra prediction modes and the missing intra prediction modes are a function of an aspect ratio of the first block,
• the second set of intra prediction modes includes directional modes from a bottom-left diagonal mode to a top-right diagonal mode, and
• the specific number of the wide angle intra prediction modes start from an angle outside a range of the directional modes from the bottom-left diagonal mode to a top-right diagonal mode.

A non-transitory computer-readable medium storing instructions which when executed by a computer for video coding cause the computer to perform:

• determining a first intra prediction mode in a first set of intra prediction modes for a non-square block, the first set of intra prediction modes includes a specific number of wide angle intra prediction modes that are not in a second set of intra prediction modes for a square block, and the first set of intra prediction modes does not include a specific number of missing intra prediction modes that are in the second set of intra prediction modes;
• and
• coding a first block according to the first intra prediction mode, wherein
• the first block is a non-square block,
• the specific numbers of the wide angle intra prediction modes and the missing intra prediction modes are a function of an aspect ratio of the first block,
• the second set of intra prediction modes includes directional modes from a bottom-left diagonal mode to a top-right diagonal mode, and
• the specific number of the wide angle intra prediction modes start from an angle outside a range of the directional modes from the bottom-left diagonal mode to a top-right diagonal mode.