Video encoding method for encoding division block, video decoding method for decoding division block, and recording medium for implementing the same

A method of video encoding, comprising:

• dividing a coding unit block within a current slice into four of first sub-blocks;
• dividing at least one of the first sub-blocks within the coding unit block into two of second sub-blocks, wherein a prediction mode for each of the second sub-blocks has intra prediction mode or inter prediction mode;
• performing prediction on the each of the second sub-blocks according to the prediction mode for the each of the second sub-blocks;
• and
• transforming the at least one of the second sub-blocks,
• wherein the performing prediction on the each of the second sub-blocks according to the prediction mode for the each of the second sub-blocks includes performing intra prediction on a second sub-block having the intra prediction mode or inter prediction on a second sub-block having the inter prediction mode.