1. A method of decoding multilayer video data, the method comprising: receiving a non-entropy encoded set of profile, tier, and level syntax structures in a video parameter set (VPS) extension; referring to one of the profile, tier, and level syntax structures for each of a plurality of output layer sets; and decoding video data corresponding to at least one of the output layer sets based on information from the profile, tier, and level syntax structure referred to for the output layer set.