t_mb_in_roi[i][j],roi_width_in_mbs_minus1[i][j] and roi_height_in_mbs_minus1[i]. with j in the range of 0 to num_rois_minus1[i], inclusive. num_directly_dependent_layers[i] specifies the number of the syntax elements directly_dependent_layer_id_delta_minus1[i][j] that are present for the current scalable layer. The value of aum_directly_dependent_layers shall be in the range of 0 to 255, inclusive. directly_dependent_layer_id_delta_minus1[i][j]plus 1 indicates the difference between the value of layer_id[i]for the current scalable layer and the layer identifier of a particular scalable layer, on which the current scalable layer directly depends. The value ofdirectly_dependent_layer_id_delta_minus1[i][j]shall be in the range of 0 to layer_id[i] 1, inclusive. The layer identifier of the particular scalable layer, on which the current scalable layer directly depends, is equal to ]-directly_dependent_layer_id_delta_minus1[i][j]-1. The scalability information SEI message shall contain information for a scalable layer b with layer_id[ equal to layer_id[i]-directly_dependent_layer_id_delta_minus1[i][j]-1 and this - information shall not contain a value of dayer_dependency_info_src_layer_id_delta[i]equal to 0. Let setOfDepLayers be the set union of the representations of the scalable layers b that have layer_ic equal to -directly_dependent_layer_id_delta_minus1[i][j]-1,with =0..num_directly_dependent_layers[i] When is equal to 1, the set setOfDepLayers shall not contain any scalable layer, on which the current scalable layer does not directly or indirectly depends and the current scalable layer shall not depend on any scalable layer that is not included in the set setOfDepLayers. layer_dependency_info_src_layer_id_delta[i] greater than 0 indicates that the current scalable layer has the same layer dependency information as the scalable layer with layer identifier equal to layer_id[i]-layer_dependency_info_src_layer_id_delta[i]. layer_dependency_info_src_layer_id_delta[i equal to specifies that the layer dependency inform