id summary reporter owner description type status priority milestone component version resolution keywords cc 321 mismatch between HM and WD on ALF chroma coeff prediction Tomohiro Ikai wjhan "There are inconsistency between HM and WD on ALF chroma prediction. HM's prediction properly works assuming that ""sum of ALF coeff is equal to or near to 1.0"", so WD should follows HM with the following fixs. (1) fix1 replace cC[ i ] = 255 – sum – alf_coeff_chroma[ i ] (8 468) with cC[ i ] = 256 – sum – alf_coeff_chroma[ i ] (8 468) (2) fix2 replace sum = alf_coeff_chroma[ AlfCodedLengthChroma – 2 ] + sigma_j( alf_coeff_chroma[ j ] << 1 ) (8 469) with j = 0..AlfCodedLengthChroma – 3 with sum = sigma_j ( alf_coeff_chroma[ j ] << 1 ) (8 469) with j = 0..AlfCodedLengthChroma – 2 The corresponding function is TComAdaptiveLoopFilter::predictALFCoeffChroma " defect closed minor Text WD5 (G1103) d9 fixed bbross wjhan jct-vc@…