l pictures shall be IDR pictures. e) SVC sequence parameter sets shall have max_num_ref_frames equal to 0. When _parameters_present_flag is equal to 1 and bitstream_restriction_flag is equal to 1, SVC sequence parameter sets shall have max_num_reorder_frames equal to 0. When vui_parameters_present_flag is equal to 1 and bitstream_restriction_flag is equal to 1, SVC sequence parameter sets shall have max_dec_frame_buffering equal to 0. Picture timing SEI messages, whether present in the bitstream (by non-VCL NAL units) or conveyed equivalently by other means not specified in this Recommendation | International Standard, shall have dpb_output_delay equal to 0. The level constraints specified in clause G.10.2 shall be fulfilled. Conformance of a bitstream to the Scalable High Intra profile is indicated by constraint_set3_flag equal to 1 with profile_idc equal to 86. Decoders conforming to the Scalable High Intra profile at a specific level shall be capable of decoding all bitstreams in which both of the following conditions are true: Rec. ITU-T H.264 (01/2012) All active SVC sequence parameter sets have profile_idc equal to 86 or 100 and constraint_set3_f equal to 1. b) level idc or (level_idc and constraint_set3_flag) for all active SVC sequence parameter sets represents a level less than or equal to the specified level. The operation of the deblocking filter process for target representation as specified in clause G.8.7.2 is not required for decoder conformance to the Scalable High Intra profile. G.10.2 Levels The following is specified for expressing the constraints in this clause: Let access unit n be the n-th access unit in decoding order with the first access unit being access unit 0. Let picture n be the primary coded picture or the corresponding decoded picture of access unit n. The variable fR is derived as follows: If picture n is a frame, fR is set equal to (1 172). Otherwise (picture n is a field), fR is set equal to 1 G.10.2.1 Level limits common to Scalable Baseline, Scalable Constrained Baseline, Scal