A video decoding method using inter prediction including: reconstructing a plurality of blocks (420; 520) within a current slice (410; 510) with respect to the current slice including the plurality of blocks, receiving from an encoder a referencing block identifier and a coding scheme indicator indicating if a target block (430; 530) within the current slice is coded with an adaptive coding mode or not; if the coding scheme indicator indicates that the target block is coded with an adaptive coding mode: determining one block among the plurality of reconstructed blocks and a block collocated to the target block in a previously reconstructed picture as a referencing block using the referencing block identifier, wherein the referencing block is selected from a block adjacent to a target block in an upper-left direction, a block adjacent to the target block on the left, a block adjacent to the target block above the target block and the collocated block: discriminating coding parameters of the referencing block, wherein the coding parameters include a motion vector, a prediction direction and a reference picture index for the referencing block; and adaptively decoding the target block based on the coding parameters of the referencing block, wherein the coding parameters of the referencing block are used as coding parameters of the target block. reconstructing a plurality of blocks (420; 520) within a current slice (410; 510) with respect to the current slice including the plurality of blocks, receiving from an encoder a referencing block identifier and a coding scheme indicator indicating if a target block (430; 530) within the current slice is coded with an adaptive coding mode or not; if the coding scheme indicator indicates that the target block is coded with an adaptive coding mode: determining one block among the plurality of reconstructed blocks and a block collocated to the target block in a previously reconstructed picture as a referencing block using the referencing block identifier, wherein the referencing block is selected from a block adjacent to a target block in an upper-left direction, a block adjacent to the target block on the left, a block adjacent to the target block above the target block and the collocated block: discriminating coding parameters of the referencing block, wherein the coding parameters include a motion vector, a prediction direction and a reference picture index for the referencing block; and adaptively decoding the target block based on the coding parameters of the referencing block, wherein the coding parameters of the referencing block are used as coding parameters of the target block. determining one block among the plurality of reconstructed blocks and a block collocated to the target block in a previously reconstructed picture as a referencing block using the referencing block identifier, wherein the referencing block is selected from a block adjacent to a target block in an upper-left direction, a block adjacent to the target block on the left, a block adjacent to the target block above the target block and the collocated block: discriminating coding parameters of the referencing block, wherein the coding parameters include a motion vector, a prediction direction and a reference picture index for the referencing block; and adaptively decoding the target block based on the coding parameters of the referencing block, wherein the coding parameters of the referencing block are used as coding parameters of the target block. discriminating coding parameters of the referencing block, wherein the coding parameters include a motion vector, a prediction direction and a reference picture index for the referencing block; and adaptively decoding the target block based on the coding parameters of the referencing block, wherein the coding parameters of the referencing block are used as coding parameters of the target block.