ence pictures are re-mapped. The values of modification_of_pic_nums_id are specified in Table 7-7. The value of the first modification_of_pic_nums_ido that follows immediately after ref_pic_list_modification_flag_10 or ref_pic_list_modification_flag_l1 shall not be equal to 3. Table 7-7 - modification_of_pic_nums_idc operations for modification of reference picture lists modification_of_pic_nums_ide modification specified abs_diff_pic_num_minus1 is present and corresponds to a difference to subtract from a picture number prediction value abs_diff_pic_num_minus1 is present and corresponds to a difference to add to a picture number prediction value long_term_pic_num is present and specifies the long-term picture number for a reference picture End loop for modification of the initial reference picture list abs_diff_pic_num_minus1 plus 1 specifies the absolute difference between the picture number of the picture being moved to the current index in the list and the picture number prediction value. . abs_diff_pic_num_minus1 shall be in the range of 0 to MaxPicNum - 1. The allowed values of abs_diff_pic_num_minus1 are further restricted as specified in clause 8.2.4.3.1. long_term_pic_num specifies the long-term picture number of the picture being moved to the current index in the list. When decoding a coded frame, long_term_pic_num shall be equal to a LongTermPicNum assigned to one of the reference frames or complementary reference field pairs marked as "used for long-term reference". When decoding a coded field, long_term_pic_num shall be equal to a LongTermPicNum assigned to one of the reference fields marked as "used for long-term reference". 7.4.3.2 Prediction weight table semantics luma_log2_weight_denom is the base 2 logarithm of the denominator for all luma weighting factors. The value of luma_log2_weight_denom shall be in the range of 0 to 7, inclusive. chroma_log2_weight_denom is the base 2 logarithm of the denominator for all chroma weighting factors. The value of chroma_log2_weight_denom shall be in the range