1. A method of encoding a multiview image datastream comprising at least one elementary stream, the method comprising: inserting multiview image information including information on at least one view image of a multiview image, into the elementary stream of the multiview image datastream; determining a multiview image parameter regarding the multiview image based on the number of elementary streams and a correlation between view images of the multiview image; and inserting the multiview image parameter into a predetermined position of the multiview image datastream, wherein the predetermined position of the multiview image datastream, into which the multiview image parameter is inserted, is determined based on the number of elementary streams and the correlation between view images of the multiview image, wherein, when a plurality of view images of the multiview image are encoded into a plurality of elementary streams in a one-to-one correspondence, the multiview image parameter includes a parameter indicating identification information of an elementary stream of a matching view image of a current view image, wherein the parameter indicates identification information of an elementary stream into which the multiview image parameter corresponding to a current elementary stream is inserted, wherein the number of elementary streams is determined based on whether information on each view image is included in one elementary stream, or information on a plurality of view images of the multiview image is inserted into a plurality of elementary streams in a one-to-one correspondence, wherein the correlation between view images of the multiview image is whether each view image refers to information on another view image when a parameter regarding the multiview image is determined, and wherein the determining of the multiview image parameter further comprises determining a parameter indicating whether the multiview image parameter regarding the matching view image of the current view image exists when the multiview image parameter regarding the current view image is determined.