In method for video decoding in a decoder, prediction information of a current block in a current picture is decoded from a coded video bitstream. The prediction information is indicative of an inter prediction mode with a potential usage of a refinement technique based on a first reference picture and a second reference picture. Whether a first equal weighting condition of chroma components from the first reference picture and the second reference picture is satisfied is determined. The refinement technique is disabled in a reconstruction of a sample in the current block when the first equal weighting condition of the chroma components from the first reference picture and the second reference picture is not satisfied.