rizontal is not present, the values of log2_max_mv_length_horizontal and log2_max_mv_length_vertical shall be inferred to be equal to 16. NOTE 11 - The maximum absolute value of a decoded vertical or horizontal motion vector component is also constrained by profile and level limits as specified in Annex A and clauses G.10 and H.10. max_num_reorder_frames indicates an upper bound for the number of frames buffers, in the decoded picture buffer (DPB), that are required for storing frames, complementary field pairs, and non-paired fields before output. It is a requirement of bitstream conformance that the maximum number of frames, complementary field pairs, or non-paired fields that precede any frame, complementary field pair, or non-paired field in the coded video sequence in decoding order and follow it in output order shall be less than or equal to max_num_reorder_frames. The value of max_num_reorder_frames shall be in the range of 0 to max_dec_frame_buffering, inclusive. When the max_num_reorder_frames syntax element is not present, the value of max_num_reorder_frames value shall be inferred as follows: If profile_idc is equal to 44, 86, 100, 110, 122, or 244 and constraint_set3_flag is equal to 1, the value of max_num_reorder_frames shall be inferred to be equal to 0. Otherwise (profile idc is not equal to 44, 86, 100, 110, 122, or 244 or constraint_set3_flag is equal to 0), the value of max_num_reorder_frames shall be inferred to be equal to MaxDpbFrames. max_dec_frame_buffering specifies the required size of the HRD decoded picture buffer (DPB) in units of frame buffers. It is a requirement of bitstream conformance that the coded video sequence shall not require a decoded picture buffer with size of more than Max( 1, max_dec_frame_buffering) frame buffers to enable the output of decoded pictures at the output times specified by dpb_output_delay of the picture timing SEI messages. The value of max_dec_frame_buffering shall be greater than or equal to max_num_ref_frames. An upper bound for the value of max_dec_f