rediction of following pictures in decoding order, but it is not output. When store_ref_base_pic_flag is not present, it shall be inferred to be equal to 0. The syntax element store_ref_base_pic_flag shall have the same value for all VCL NAL units of a dependency representation. When nal ref idc is equal to 0, store_ref_base_pic_flag shall be equal to 0. When max_num_ref_frames is less than 2 in the SVC sequence parameter set that is referred to by the associated NAL unit, store_ref_base_pic_flag shall be equal to 0. additional_prefix_nal_unit_extension_flag equal, to 0 specifies that the prefix_nal_unit_svc( syntax structure does not contain any additional_prefix_nal_unit_extension_data_flag syntax elements. additional_prefix_nal_unit_extension_flag shall be equal to 0 in bitstreams conforming to this Recommendation | International Standard. The value of 1 for additional_prefix_nal_unit_extension_flagisreserved for future use by ITU-T | ISO/IEC. Decoders shall ignore all data that follow the value 1 for additional_prefix_nal_unit_extension_fla in a prefix_nal_unit_svc() syntax structure. additional_prefix_nal_unit_extension_data_flagmay have any value. NOTE - The syntax elements additional_prefix_nal_unit_extension, flag and ional_prefix_nal_unit_extension_data_flag not used by the decoding process specified in this Recommendation International Standard. Rec. ITU-T H.264 (01/2012) G.7.4.2.13 Slice layer extension RBSP semantics The semantics specified in clause 7.4.2.13 apply. G.7.4.3 Slice header semantics The semantics specified in clause 7.4.3 apply with the following modifications. All referenced syntax elements and variables are syntax elements and variables for the dependency representation with dependency_ic equal to 0. b) A frame, field, top field, bottom field, picture, and decoded picture is interpreted as layer frame, layer field, layer top field, layer bottom field, layer picture, and decoded layer picture, respectively, that represent an intermediate decoding result for the dependency representation