Adaptation of selection of most probable mode candidates depending on block shape

An apparatus for video decoding, comprising one or more processors, wherein the one or more processors are configured to:

• obtain a list comprising a number of intra prediction mode candidates for a current block depending on a shape of the current block, wherein modes at distance −2 and distance 2 from an intra prediction mode of a left or top neighbor block are included in the list, depending on if the current block is flat or tall, respectively, wherein an adjacent mode is computed using a remainder operation with an offset set to 61 and a mod set to 64, when there are 67 intra prediction modes;
• and
• decode the current block based on the list.

A method for video encoding, comprising:

• obtaining a list comprising a number of intra prediction mode candidates for a current block depending on a shape of the current block, wherein modes at distance −2 and distance 2 from an intra prediction mode of a left or top neighbor block are included in the list, depending on if the current block is flat or tall, respectively, wherein an adjacent mode is computed using a remainder operation with an offset set to 61 and a mod set to 64, when there are 67 intra prediction modes;
• and
• encoding the current block based on the list.

An apparatus for video encoding, comprising one or more processors, wherein the one or more processors are configured to:

• obtain a list comprising a number of intra prediction mode candidates for a current block depending on a shape of the current block, wherein modes at distance −2 and distance 2 from an intra prediction mode of a left or top neighbor block are included in the list, depending on if the current block is flat or tall, respectively, wherein an adjacent mode is computed using a remainder operation with an offset set to 61 and a mod set to 64, when there are 67 intra prediction modes;
• and
• encode the current block based on the list.