1. A method for generating a digital stereoscopic video stream comprising container frames (C), said container frames (C) comprising information about a right image (R) and a left image (L), the method comprising: coding said digital stereoscopic video stream, when coding said digital stereoscopic video stream, entering at least one metadatum (M) which is adapted to identify a region of a container frame (C) containing only one of said two images (L, R) into the digital stereoscopic video stream, wherein the digital stereoscopic video stream is coded according to the H.264/AVC standard which defines a cropping rectangle or a standard using metadata similar to those used for defining the cropping rectangle of the H.264/AVC standard, and wherein said at least one metadatum (M), while using the same syntax as the standard, refers to only one of the two images (L, R) contained in said container frame (C).