sl Otherwise (quality_id is equal to 0), ef_layer_chroma_phase_y_plusl is inferred to be equal to seq_ref_layer_chroma_phase_y_plus1. The value of ref_layer_chroma_phase_y plus1 shall be in the range of 0 to 2, inclusive. When no_inter_layer_pred_flag is equal to 0, the following applies: a) When ref_layer_dq_id is greater than 0, ref_layer_chroma_phase_y_plus1 should be equal to chroma phase y plus1 of the subset sequence parameter set RBSP that is referred to by the reference layer representation (with DQId equal to ref_layer_dq_id). b) When RefLayerChromaArrayType is equal to 1 and chroma_sample_loc_type_top_fielo and chroma_sample_loc_type_bottom, field are present in the SVC sequence parameter set that is referred to by the reference layer representation (with DQId equal to ref_layer_dq_id), the following applies: If ef_layer_chroma_phase plus1 is equal to 0, chroma_sample_loc_type_top_field and chroma_sample_loc_type_bottom_field of the SVC sequence parameter set that is referred to by the reference layer representation should be equal to 2 or 3. Otherwise, if ef_layer_chroma_phase_ plus1 is equal to 1, chroma_sample_loc_type_top_field and chroma_sample_loc_type_bottom_fieldof the SVC sequence parameter set that is referred to by the reference layer representation should be equal to 0 or 1. Otherwise (chroma phase y plus1 is equal to 2), chroma_sample_loc_type_top_field and chroma_sample_loc_type_bottom_field of the SVC sequence parameter set that is referred to by the reference layer representation should be equal to 4 or 5. Rec. ITU-T H.264 (01/2012) c) When RefLayerChromaArrayType is not equal to 1, f_layer_chroma_phase_y_plus1 should be equal to 1. scaled_ref_layer_left_offsetspecifies the horizontal offset between the upper-left luma sample of a resampled layer picture used for inter-layer prediction and the upper-left luma sample of the current picture or current layer picture in units of two luma samples. When scaled_ref_layer_left_offset is not present,itshall be inferred as follows: If quality_ id 