id summary reporter owner description type status priority milestone component version resolution keywords cc 699 Derivation process of chroma offset in WP when an input bit depth is beyond 8bit Tanizawa bbross "When an input bit depth is beyond 8bit, the derivation process of chroma offset in the weighted prediction is incorrect. Since the value of chroma offset is always held in 8bit (see equations (8-224) and (8-225)), the predicted value of chroma offset must be also held in 8bit. The original equation (7-48) in section 7.4.5.4 should be modified simply as follows: --------- '''Original;''' shift = 1 << ( BitDepthC − 1 ) ChromaOffsetL0[ i ][ j ] = Clip3( −128, 127, (delta_chroma_offset_l0[ i ][ j ] – ( (shift*ChromaWeightL0[ i ][ j ]) >> ChromaLog2WeightDenom ) − shift ) ) (7-48) --------- '''Modified;''' ChromaOffsetL0[ i ][ j ] = Clip3( −128, 127, (delta_chroma_offset_l0[ i ][ j ] – ( (128*ChromaWeightL0[ i ][ j ]) >> ChromaLog2WeightDenom ) − 128 ) ) (7-48) " defect closed minor D8 Text D8 (J1003) d7 fixed bbross wjhan jct-vc@…