Hi, I think there is a typo bug in latest cvs in file libmpcodecs/vf_qp.c --------- line 89: vf->priv->lut[i+129]= lrintf(ff_eval(vf->priv->eq, const_values, const_names, NULL, NULL, NULL, NULL, NULL)); ----------- what is lrintf a typo or ? my guess is sprintf Mats Röjestål