eOfScalingList - 1, inclusive. The value of delta_scale shall be in the range of -128 to +127, inclusive. When useDefaultScalingMatrixFlag is derived to be equal to 1, the scaling list shall be inferred to be equal to the default scaling list as specified in Table 7-2. 7.4.2.1.2 Sequence parameter set extension RBSP semantics seq_parameter_set_id identifies the sequence parameter set associated with the sequence parameter set extension. The value of seq_parameter set id shall be in the range of 0 to 31, inclusive. aux_format_idc equal to 0 indicates that there are no auxiliary coded pictures in the coded video sequence. aux_format_i equal to 1 indicates that exactly one auxiliary coded picture is present in each access unit of the coded video sequence, and that for alpha blending purposes the decoded samples of the associated primary coded picture in each access unit should be multiplied by the interpretation sample values of the auxiliary coded picture in the access unit in the display process after output from the decoding process. aux_format_idc equal to 2 indicates that exactly one auxiliary coded picture exists in each access unit of the coded video sequence, and that for alpha blending purposes the decoded samples of the associated primary coded picture in each access unit should not be multiplied by the interpretation sample values of the auxiliary coded picture in the access unit in the display process after output from the Rec. ITU-T H.264 (01/2012) decoding process. aux_format_idc equal to 3 indicates that exactly one auxiliary coded picture exists in each access unit of the coded video sequence, and that the usage of the auxiliary coded pictures is unspecified. The value of aux format id shall be in the range of 0 to 3, inclusive. Values greater than 3 for aux_format_ido are reserved to indicate the presence of exactly one auxiliary coded picture in each access unit of the coded video sequence for purposes to be specified in the future by ITU-T | ISO/IEC. When aux_format_idc is not present, it shall be