Method for decoding video for parallel processing

A video decoding method for parallel processing is disclosed. The video decoding method comprises the steps of acquiring a flag (tiles_enabled_flag), indicating whether a picture is divided into tiles and parallel processing is performed, from a picture parameter set (PPS), including encoding information applied to the picture among data units forming a video from a bit stream; and, if the flag is 1, dividing the picture into tile units and the parallel processing is performed for each of the tile units, wherein the tile unit is a set of maximum encoding units and an independent data processing unit.