sub-macroblock. In bitstreams conforming to the Scalable Baseline, Scalable Constrained Baseline, Scalable High, Scalable Constrained High, or Scalable High Intra profiles, for the VCL HRD parameters, BitRate[ SchedSelIdx c ppBrrclFactor * MaxBR CpbSize[ SchedSelIdx ] <= cpbBrVclFactor * MaxCPB for at least one value of SchedSelIdx, where cpbBrVclFactor is specified in Table G-17. With vui_ext_vcl_hrd_parameters_present_flag[ being the syntax element, in the SVC VUI parameters extension of the active SVC sequence parameter set, that is associated with the VCL HRD parameters that are used for conformance checking (as specified in Annex C), BitRate[ SchedSelIdx ] and CpbSize[ SchedSelIdx ] are given as follows: - If vui_ext_vcl_hrd_parameters_present_flag[i is equal to 1, BitRate[ SchedSelIdx CpbSize[ SchedSelIdx ] are given by Equations E-37 and E-38, respectively, using the syntax elements of hrd _parameters() syntax structure immediately follows vui_ext_vcl_hrd_parameters_present_flag[ Otherwise (vui_ext_vcl_hrd_parameters_present_flag[ i ] is equal to 0), itRate[SchedSelldx and CpbSize[ SchedSelIdx ] are inferred as specified in clause E.2.2 for VCL HRD parameters. MaxBR and MaxCPB are specified in Table A-1 in units of cpbBrVclFactor bits/s and cpbBrVclFactor bits, respectively. The bitstream shall satisfy these conditions for at least one value of SchedSelIdx in the range 0 to cpb_cnt_minus1, inclusive. h) In bitstreams conforming to the Scalable Baseline, Scalable Constrained Baseline, Scalable High, Scalable Constrained High, or Scalable High Intra profiles, for the NAL HRD parameters, BitRate[ SchedSelIdx ] cpbBrNalFactor * MaxBR CpbSize[SchedSelldx]<= cpbBrNalFactor * MaxCPB for at least one value of SchedSelIdx, where cpbBrNalFactor is specified in Table G-17. With vui_ext_nal_hrd_parameters_present_flag[i] being the syntax element, in the SVC VUI parameters extension of the active SVC sequence parameter set, that is associated with the NAL HRD parameters that are used for conformance checking (as specif