Method and apparatus of mode- and size-dependent block-level restrictions for position dependent prediction combination

A decoder apparatus, comprising:

• one or more processors;
• and
• a non-transitory computer-readable storage medium coupled with the one or more processors and storing programming for execution by the one or more processors, wherein the programming, when executed by the one or more processors, configures the apparatus to perform operations comprising:
• determining a prediction value for a sample of a current block from one or more reference samples outside the current block using an intra predication mode;
• when one or more predefined conditions are not satisfied,
• coding the current block using the weighted prediction value
• wherein the one or more predefined conditions relate to at least one of a width and/or a height of the current block and the intra prediction mode.