ffering period SEI messages is determined by the application, by some means not specified in this Recommendation International Standard. - Otherwise, the value of VuiMvcNalHrdBpPresentFlag[ i ] shall be set equal to 0. vui_mvc_vcl_hrd_parameters_present_flag[i]specifies the value of ycl_hrd_parameters_present_flag, as specified in clause E.2.1, for the i-th sub-bitstream. When vui_mve_vcl_hrd_parameters_present_flag[i]isequal to 1, VCL HRD parameters (clauses E.1.2 and E.2.2) for the i-th sub-bitstream immediately follow the flag. The variable VuiMvcVclHrdBpPresentFlag[ i ] is derived as follows: If any of the following is true, the value of VuiMvcVclHrdBpPresentFlag| i ] shall be set equal to 1: ui_mvc_vcl_hrd_parameters_present_flag[ i ] is present in the bitstream and is equal to 1, for the i-th sub-bitstream, the need for presence of buffering periods for VCL HRD operation to be present in the bitstream in buffering period SEI messages is determined by the application, by some means not specified in this Recommendation International Standard. Otherwise, the value of VuiMvcVclHrdBpPresentFlag[ i ] shall be set equal to 0. The variable VuiMvcCpbDpbDelaysPresentFlag[ i ] is derived as follows: If any of the following is true, the value of VuiMvcCpbDpbDelaysPresentFlag[ i] shall be set equal to Rec. ITU-T H.264 (01/2012) vui_mvc_nal_hrd_parameters_present_flag[i ] is present in the bitstream and is equal to 1, vui_mvc_vcl_hrd_parameters_present_flag[i ] is present in the bitstream and is equal to 1, for the i-th sub-bitstream, the need for presence of CPB and DPB output delays to be present in the bitstream in picture timing SEI messages is determined by the application, by some means not specified in this Recommendation | International Standard. Otherwise, the value of VuiMvcCpbDpbDelaysPresentFlag[ i ] shall be set equal to 0. vui_mvc_low_delay_hrd_flag[ i specifies the value of low_delay_hrd_flag, as specified in clause E.2.1, for the i-th sub-bitstream. vui_mvc_pic_struct_present_flag[i 1 specifies the value 