ese sets having entropy_coding_mode_flag equal to 0 and the other set having entropy_coding_mode_flag equal to 1 in all picture parameter set NAL units that are referenced in the VCL NAL units of the alternative set of access units. rewriting_info_flag[i [[j ] equal to 1 specifies that information about the alternative set of access units obtained by converting the current scalable layer representation is present in the scalability information SEI message. rewriting_info_flag[ i ][ equal to 0 specifies that information about the alternative set of access units is not present in the scalability information SEI message. When rewriting_info_flag[i][j is equal to 1, it is asserted that the information signalled by the syntax elements rewriting_profile_level_idc[i[j], rewriting_avg_bitrate[i][j], and rewriting_max_bitrate[i][j] is correct, though, when conversion_type_idc[i] is equal to 0 or the value of entropy_coding_mode_flag is modified, the method for constructing the alternative set of access units is unspecified. rewriting_profile_level_idc[i][j] indicates the conformance point of the alternative set of access units for the current scalable layer representation after conversion. rewriting_profile_level_idc[i ] is the exact copy of the three bytes consist profile_idc constraint_set0_flag, constraint_setl_flag, constraint_set2_flag, constraint_set3_flag, constraint_set4_flag, constraint_set5_flag, reserved_zero_2bits, and level_idc, as if these syntax elements were used to specify the profile and level conformance of the alternative set of access units obtained by converting the scalable layer representation. rewriting_avg_bitrate[i][j indicates the average bit rate of the alternative set of access units obtained by converting the representation of the current scalable layer. The average bit rate of the alternative set of access units in bits per second is given by BitRateBPS( rewriting_avg_bitrate with the function BitRateBPS() being specified in Equation G-370. The average bit rate is derived according to the a