code: def _pic(self):
          
          return CT_Picture.new_video_pic(
              self._shape_id, self._shape_name, self._video_rId,
              self._media_rId, self._poster_frame_rId, self._x, self._y,
              self._cx, self._cy
          )
docs: Return the new `p:pic` element referencing the video.