A method of decoding is provided. The method includes receiving a video bitstream including a plurality of layers, a video parameter set (VPS) specifying a plurality of output layer sets (OLSs) each including one or more layers from the plurality of layers, and a sequence parameter set (SPS) including a set of decoded picture buffer (DPB) parameters for each of the one or more layers only once when one or more of the one or more layers have been included in more than one of the plurality of OLSs; and decoding a picture from one of the plurality of layers to obtain a decoded picture. A corresponding method of encoding is also provided.