A method for generating a stereoscopic video stream includes composite images having pixels related to a right and a left image of a tridimensional video content; the pixels of the right and left images are inserted into a composite image of the stereoscopic video stream, all the pixels of the right and left images are inserted in the composite image by leaving one of said two images unaltered and breaking up the other one into regions including a plurality of pixels and entering the regions into the composite image; the composite image has larger dimensions than those necessary to allow the insertion of all pixels of the left and right images, and in the pixels of the composite image left after such insertion a depth map is inserted, whose elements correspond to the pixel depth of the tridimensional content.