et5_flag is reserved for future use by ITU-T ISO/IEC. constraint_set5_flag_si be equal to 0 when profile_i is not equal to 118 in bitstreams conforming to this Recommendation | International Standard. Decoders shall ignore the value of constraint_set5_flag when profile_idc is not equal to 118. NOTE 2 - For a coded video sequence conforming to both Multiview High and Stereo High profiles, the profile_idc should be equal to 118 and constraint_set5 flag should be equal to 1. reserved_zero_2bits shall be equal to 0. Other values of reserved_zero_2bits may be specified in the future by ITU-T ISO/IEC. Decoders shall ignore the value of reserved zero 2bits. seq_parameter_set_ididentifies the sequence parameter set that is referred to by the picture parameter set. The value of seq_parameter_set_id shall be in the range of 0 to 31, inclusive. NOTE 3 - When feasible, encoders should use distinct values of parameter_set_id when the values of other sequence parameter set syntax elements differ rather than changing the values of the syntax elements associated with a specific value of seq_parameter_set_id chroma format idc specifies the chroma sampling relative to the luma sampling as specified in clause 6.2. The value of chroma_format idc shall be in the range of 0 to 3, inclusive. When chroma_format_idc is not present, it shall be inferred to be equal to 1 (4:2:0 chroma format). separate_colour_plane_flage equal to 1 specifies that the three colour components of the 4:4:4 chroma format are coded separately. separate_colour_plane_fla; equal to 0 specifies that the colour components are not coded separately. When separate_colour_plane_flagis not present, it shall be inferred to be equal to 0. When separate_colour_plane_flagi is equal to 1, the primary coded picture consists of three separate components, each of which consists of coded samples of one colour plane (Y, Cb or Cr) that each use the monochrome coding syntax. In this case, each colour plane is associated with a specific colour_plane_id value. NOTE 4 - There is no dep