uarter luma frame samples or the absolute difference between the horizontal or vertical components of the motion vectors mvL1P and mvL0Q is greater than or equal to 4 in units of quarter luma frame samples. NOTE 5 - The determination of whether the reference pictures used for the two macroblock/sub-macroblock partitions are the same or different is based only on which pictures are referenced, without regard to whether a prediction is formed using an index into reference picture list 0 or an index into reference picture list 1, and also without regard to whether the index position within a reference picture list is different. NOTE 6 - A vertical difference of 4 in units of quarter luma frame samples is a difference of 2 in units of quarter luma field samples Otherwise, bS is set equal to 0. The variable interProfileConformanceFlag is derived as follows: If DQId is greater than 0, interLayerDeblockingFlag is equal to 0, and any of the following conditions are true, interProfileConformanceFlag is set equal to 1: profile_idc is equal to 83 and constraint_setl_flag is equal to 1, - profile_idc is equal to 86 and constraint_set0_flag is equal to 1. Otherwise, hnterProfileConformanceFlag is set equal to 0. When interProfileConformanceFlag is equal to 1 and both mbType[ mbAddrP ] and mbType[ mbAddrQ ] specify an Inter macroblock prediction mode, it is a requirement of bitstream conformance that the following constraints are obeyed: When cTrafo[ mbAddrP ] is equal to T 8x8 and the array sTCoeff] mbAddrP ] contains at least one non-zero scaled transform coefficient value for the 8x8 luma transform block associated with the 8x8 luma block containing sample Po, the bitstream shall not contain data that result in an array rSL for which all sample values are equal to 0 for the 8x8 luma block containing sample Po. Rec. ITU-T H.264 (01/2012) When cTrafo[ mbAddrP ] is equal to T 4x4 and the array sTCoeff] mbAddrP ] contains at least one non-zero scaled transform coefficient value for the 4x4 luma transform block associated with t