Displaying a stereo image in a favorable manner is enabled. First disparity information (disparity information corresponding to the nearest object reproduction position in a certain area of a picture display screen) and second disparity information (disparity information corresponding to the farthest object reproduction position in the certain area of the picture display screen) which are obtained for each of certain pictures of image data are inserted into a video stream, and the video stream is transmitted. On the basis of the first disparity information and the second disparity information, a receiving side is capable of checking whether or not disparity angles in a same-side direction and a crossing direction are within a certain range in which viewing does not cause any health problems, and reconfiguring left-eye image data and right-eye image data which form a stereo image if necessary.