ecoded pictures that are indicated by frm_width_in_mbs_minus1[i] and frm_height_in_mbs_minus1[i], respectively, shall be identical to the width and height of the decoded pictures that are specified by the syntax elements pic_width_in_mbs_minus1 and pic_height_in_map_units_minus1, respectively, of the SVC sequence parameter sets referenced in the corresponding coded slice NAL units with dependency_id equal to dependency_id[i]. Otherwise (sub_pic_layer_flag[ is equal to 1), the width and height of the sub-picture area inside a decoded picture are equal to frm_width_in_mbs_minus1[i]+1 and (frm_height_in_mbs_minus1[i]+1) + field_pic_flag ) ) macroblocks, respectively, with field_pic_flag being the slice header syntax element in the slices with dependency_ equal to dependency_id[i] of the corresponding primary coded picture. The sub-picture area that is indicated by frm_width_in_mbs_minus1[i] and rm_height_in_mbs_minus1[i]shall be less than the area of the decoded pictures, which is specified by the syntax elements pic_width_in_mbs_minus1 and pic_height_in_map_units_minus1 of the SVC sequence parameter sets referenced in the corresponding coded slice NAL units with dependency_id equal to dependency_id[i]. The variable FrmWidthInMbs is set equal to (frm_width_in_mbs_minus1[i]+1).7 The variable FrmHeightInMbs[ i ] is set equal to frm_height_in_mbs_minus1[i]+1.The variable FrmSizeInMbs[ is set equal to (FrmWidthInMbs[ FrmHeightInMbs[i]). base_region_layer_id[i]indicates the layer identifier layer id| b ] of the scalable layer b that represents the base region for the current scalable layer as specified in the following. The value of base_region_layer_id[i shall be in the range of 0 to 2047, inclusive. Let picSubset be the set of the primary coded pictures, inside the current scalable layer representation, that contain any VCL NAL unit with dependency_id equal to dependency_id[i]. Let basePicSubset be the set of the primary coded Rec. ITU-T H.264 (01/2012) pictures, inside the representation of the scalable layer b with l