id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
934	Potential issue in determining vertical luma interpolation filter coefficients	vdrugeon		"In 8.5.6.3.2 Luma sample interpolation filtering process, when calculating vertical luma interpolation filter coefficients: 
""The vertical luma interpolation filter coefficients fLV[ p ] for each 1/16 fractional sample position p equal to yFracL are derived as follows:
	–	If MotionModelIdc[ xSb ][ ySb ] is greater than 0, and sbWidth and sbHeight are both equal to 4, and scalingRatio[ 0 ] is greater than 28672, the luma interpolation filter coefficients fLV[ p ] are specified in Table 31.
	–	Otherwise, if MotionModelIdc[ xSb ][ ySb ] is greater than 0, and sbWidth and sbHeight are both equal to 4, and scalingRatio[ 0 ] is greater than 20480, the luma interpolation filter coefficients fLV[ p ] are specified in Table 32.
	–	Otherwise, if MotionModelIdc[ xSb ][ ySb ] is greater than 0, and sbWidth and sbHeight are both equal to 4, the luma interpolation filter coefficients fLV[ p ] are specified in Table 30.
	–	Otherwise, if scalingRatio[ 1 ] is greater than 28672, luma interpolation filter coefficients fLV[ p ] are specified in Table 28.
	–	Otherwise, if scalingRatio[ 1 ] is greater than 20480, luma interpolation filter coefficients fLV[ p ] are specified in Table 29.
	–	Otherwise, the luma interpolation filter coefficients fLV[ p ] are specified in Table 27 depending on hpelIfIdx set equal to hpelVerIfIdx.""

Is it intended that scalingRatio[0], i.e. the horizontal scaling factor, is used for determining the vertical filter coefficients in the first two bullets, but scalingRatio[1], i.e. the vertical scaling factor, is used in subsequent bullets? Could someone familiar with this process please check?"	task	closed	minor		spec		fixed		ksuehring bbross XiangLi fbossen jvet@…