x, the number of macroblocks in any coded slice shall not exceed MaxFS / 4, where MaxFS is specified in Table A-1. Table A-4 specifies limits for each level that are specific to bitstreams conforming to the Scalable High, Scalable Constrained High, and Scalable High Intra profiles. Table G-16 specifies limits for each level that are specific to bitstreams conforming to the Scalable Baseline and Scalable Constrained Baseline profiles. Each entry in Tables A-4 and G-16 indicates, for the level corresponding to the row of the table, the absence or value of a limit that is imposed by the variable corresponding to the column of the table, as follows: If the table entry is marked as "-", no limit is imposed by the value of the variable as a requirement of bitstream conformance to the profile at the specified level. Otherwise, the table entry specifies the value of the variable for the associated limit that is imposed as a requirement of bitstream conformance to the profile at the specified level. Table G-16 - Scalable Baseline and Scalable Constrained Baseline profile level limits Level number SliceRate MaxSubMbRectSize Table G-17 - Specification of cpbBrVclFactor and cpbBrNalFactor Profile cpbBrVclFactor cpbBrNalFactor Scalable Baseline, Scalable Constrained Baseline, Scalable High, Scalable Constrained High, or Scalable High Intra Byte stream format The specifications in Annex B apply. Hypothetical reference decoder The specifications in Annex C apply with substituting SVC sequence parameter set for sequence parameter set. Rec. ITU-T H.264 (01/2012) Supplemental enhancement information The specifications in Annex D together with the extensions and modifications specified in this clause apply. G.13.1 SEI payload syntax G.13.1.1 Scalability information SEI message syntax scalability_info(payloadSize) { Descriptor temporal_id_nesting_flag priority_layer_info_present_flag priority_id_setting_flag num_layers_minusl ue(v) i=0;i<=num_layers_minus1;i++) layer_id[i] ue(v) priority_id[i] discardable_flag[i dependency_id[i] qua