VAR_CLIPVAL       157 libavfilter/vf_lut.c     double val    = s->var_values[VAR_CLIPVAL];
VAR_CLIPVAL       170 libavfilter/vf_lut.c     double val    = s->var_values[VAR_CLIPVAL];
VAR_CLIPVAL       259 libavfilter/vf_lut.c             s->var_values[VAR_CLIPVAL] = av_clip(val, min[color], max[color]);