A method of processing video data, the method comprising: obtaining a data stream comprising a plurality of elementary streams and a High Efficiency Video Coding (HEVC) timing and Hypothetical Reference Decoder (HRD) descriptor, wherein the HEVC timing and HRD descriptor comprises a target schedule index syntax element indicating an index of a delivery schedule, the plurality of elementary streams comprising encoded representations of the video data; identifying, based on a set of parameters, a syntax element in an array of syntax elements in a video parameter set (VPS), wherein: the VPS comprises a plurality of HRD parameters syntax structures, wherein each respective HRD parameters syntax structure of the plurality of HRD parameters syntax structures comprises a respective set of HRD parameters, each respective syntax element of the array of syntax elements specifies an index of an HRD parameters syntax structure in the plurality of HRD parameters syntax structures, and the set of parameters comprises a parameter having a value equal to a value of the target schedule index syntax element; and identifying, based on an index specified by the identified syntax element, a particular HRD parameters syntax structure in the plurality of HRD parameters syntax structures as being applicable to a particular elementary stream that is part of an operation point, the plurality of elementary streams including the particular elementary stream. obtaining a data stream comprising a plurality of elementary streams and a High Efficiency Video Coding (HEVC) timing and Hypothetical Reference Decoder (HRD) descriptor, wherein the HEVC timing and HRD descriptor comprises a target schedule index syntax element indicating an index of a delivery schedule, the plurality of elementary streams comprising encoded representations of the video data; identifying, based on a set of parameters, a syntax element in an array of syntax elements in a video parameter set (VPS), wherein: the VPS comprises a plurality of HRD parameters syntax structures, wherein each respective HRD parameters syntax structure of the plurality of HRD parameters syntax structures comprises a respective set of HRD parameters, each respective syntax element of the array of syntax elements specifies an index of an HRD parameters syntax structure in the plurality of HRD parameters syntax structures, and the set of parameters comprises a parameter having a value equal to a value of the target schedule index syntax element; and the VPS comprises a plurality of HRD parameters syntax structures, wherein each respective HRD parameters syntax structure of the plurality of HRD parameters syntax structures comprises a respective set of HRD parameters, each respective syntax element of the array of syntax elements specifies an index of an HRD parameters syntax structure in the plurality of HRD parameters syntax structures, and the set of parameters comprises a parameter having a value equal to a value of the target schedule index syntax element; and identifying, based on an index specified by the identified syntax element, a particular HRD parameters syntax structure in the plurality of HRD parameters syntax structures as being applicable to a particular elementary stream that is part of an operation point, the plurality of elementary streams including the particular elementary stream. <EOS>