A method of Intra prediction mode, referred to as Intra mode, coding for a scalable video coding system, wherein video data is configured into a Base Layer, BL , and an Enhancement Layer, EL , wherein the EL has higher spatial resolution than the BL, a co-located block in the BL corresponding to a current block in the EL is coded before the current block, and the current block in the EL is Intra coded, the method comprising: determining a current Intra coding mode of the current block in the EL ; determining a BL Intra coding mode associated with the co-located block in the BL , characterized by the method further comprising: determining one or more neighboring Intra coding modes associated with respective one or more neighboring blocks of the current block in the EL , said respective one or more neighboring blocks of the current block in the EL comprising a left block adjacent to a left side of the current block and a top block adjacent to a top side of the current block, the left block being associated with a left-block Intra coding mode, and the top block being associated with a top-block Intra coding mode, and the method further comprising: deriving 3 most probable modes from the BL Intra coding mode associated with the co-located block in the BL , the left-block Intra coding mode and the top-block Intra coding mode, applying predictive coding to the current Intra coding mode of the current block in the EL using said 3 most probable modes, wherein the 32 remaining modes are represented by 5 bin fixed length coding. determining a current Intra coding mode of the current block in the EL ; determining a BL Intra coding mode associated with the co-located block in the BL , characterized by the method further comprising: determining one or more neighboring Intra coding modes associated with respective one or more neighboring blocks of the current block in the EL , said respective one or more neighboring blocks of the current block in the EL comprising a left block adjacent to a left side of the current block and a top block adjacent to a top side of the current block, the left block being associated with a left-block Intra coding mode, and the top block being associated with a top-block Intra coding mode, and the method further comprising: deriving 3 most probable modes from the BL Intra coding mode associated with the co-located block in the BL , the left-block Intra coding mode and the top-block Intra coding mode, applying predictive coding to the current Intra coding mode of the current block in the EL using said 3 most probable modes, wherein the 32 remaining modes are represented by 5 bin fixed length coding. determining one or more neighboring Intra coding modes associated with respective one or more neighboring blocks of the current block in the EL , said respective one or more neighboring blocks of the current block in the EL comprising a left block adjacent to a left side of the current block and a top block adjacent to a top side of the current block, the left block being associated with a left-block Intra coding mode, and the top block being associated with a top-block Intra coding mode, and the method further comprising: deriving 3 most probable modes from the BL Intra coding mode associated with the co-located block in the BL , the left-block Intra coding mode and the top-block Intra coding mode, applying predictive coding to the current Intra coding mode of the current block in the EL using said 3 most probable modes, wherein the 32 remaining modes are represented by 5 bin fixed length coding. deriving 3 most probable modes from the BL Intra coding mode associated with the co-located block in the BL , the left-block Intra coding mode and the top-block Intra coding mode, applying predictive coding to the current Intra coding mode of the current block in the EL using said 3 most probable modes, wherein the 32 remaining modes are represented by 5 bin fixed length coding. <EOS>