is the value of cpb_removal_delay_length_minus1 coded in the sequence parameter set that is active for the primary coded picture associated with the picture timing SEI message, although cpb_removal_delay specifies a number of clock ticks relative to the removal time of the preceding access unit containing a buffering period SEI message, which may be an access unit of a different coded video sequence. dpb_output_delay is used to compute the DPB output time of the picture. It specifies how many clock ticks to wait after removal of an access unit from the CPB before the decoded picture can be output from the DPB (see clause C.2). NOTE 3 - A picture is not removed from the DPB at its output time when it is still marked as "used for short-term reference" or "used for long-term reference". NOTE 4 - Only one dpb_output_delay is specified for a decoded picture. The length of the syntax element dpb_output_delay is given in bits by dpb_output_delay_length_minus1 1. When max_dec_frame_buffering is equal to 0, dpb_output_delay shall be equal to 0. The output time derived from the dpb_output_delay of any picture that is output from an output timing conforming decoder as specified in clause C.2 shall precede the output time derived from the dpb_output_delay of all pictures in any subsequent coded video sequence in decoding order. Rec. ITU-T H.264 (01/2012) The output time derived from the dpb_output_delay of the second field, in decoding order, of a complementary non-reference field pair shall exceed the output time derived from the dpb_output_delay of the first field of the same complementary non-reference field pair. The picture output order established by the values of this syntax element shall be the same order as established by the values of PicOrderCnt( ) as specified in clauses C.4.1 to C.4.5, except that when the two fields of a complementary reference field pair have the same value of PicOrderCnt(), the two fields have different output times. For pictures that are not output by the "bumping" process of clause C.4.5 be