A stereoscopic video encoding device inputs therein: a multi-view video constituted by a reference viewpoint video, a left viewpoint video, and a right viewpoint video; and a reference viewpoint depth map, a left viewpoint depth map, and a right viewpoint depth map, each of which is a map of a depth value associated with the multi-view video. In the stereoscopic video encoding device, based on a synthesis technique indicated by a depth type, a video synthesis unit synthesizes a plurality of videos, and a depth map synthesis unit synthesizes a plurality of depth maps. A video encoding unit, a depth map encoding unit, and a parameter encoding unit encode, by respective units, respective parameters containing a synthesized video, a synthesized depth map, and a depth type, respectively. A multiplexing unit multiplexes the encoded parameters into an encoded bit string and transmits the multiplexed encoded bit string.