This disclosure provides devices and methods for processing video data. The method can include extracting an output operation point from received video data. If the output operation point corresponds to one of an entire bitstream and a temporal subset of the entire bitstream with only the base layer as output, the method can include performing a first bitstream conformance test. If the output operation point corresponds to one of a layer set specified by a base video parameter set (VPS) of an active VPS and a temporal subset of the layer set with only the base layer to be output, the method can include performing a second bitstream conformance test. If the output operation point corresponds to one of an output layer set (OLS) specified by a VPS extension of the active VPS and a temporal subset of the OLS, the method can include performing a third bitstream conformance test.