to 23. dpb_output_delay_length_minus1 specifies the length in bits of the dpb_output_delay syntax element. The length of the dpb_output_delay syntax element of the picture timing SEI message is dpb_output_delay_length_minus1 + 1. When the dpb_output_delay_length_minus1 syntax element is present in more than one hrd_parameters() syntax structure within the VUI parameters syntax structure, the value of the dpb_output_delay_length_minus1 parameters shall be equal in both hrd_parameters( ) syntax structures. When the dpb_output_delay_length_minus1 syntax element is not present, it shall be inferred to be equal to 23. time_offset_length greater than 0 specifies the length in bits of the time offset syntax element. time_offset_length equal to 0 specifies that the time offset syntax element is not present. When the time_offset_length syntax element is present in more than one hrd_parameters() syntax structure within the VUI parameters syntax structure, the value of the time_offset_length parameters shall be equal in both hrd_parameters() syntax structures. When the time_offset_length syntax element is not present, it shall be inferred to be equal to 24. Rec. ITU-T H.264 (01/2012) Annex G Scalable video coding (This annex forms an integral part of this Recommendation | International Standard.) This annex specifies scalable video coding, referred to as SVC. Scope Bitstreams and decoders conforming to one or more of the profiles specified in this annex are completely specified in this annex with reference made to clauses 2-9 and Annexes A-E. Normative references The specifications in clause 2 apply with the following additions. ISO/IEC 10646:2003, Information technology - Universal Multiple-Octet Coded Character Set (UCS). IETF RFC 3986 (2005), Uniform Resource Identifiers (URI): Generic Syntax. Definitions For the purpose of this annex, the following definitions apply in addition to the definitions in clause 3. These definitions are either not present in clause 3 or replace definitions in clause 3. G.3.1 arbitrary slice o