VAR_OHSUB          79 libavfilter/scale_eval.c     var_values[VAR_OHSUB] = 1 << out_desc->log2_chroma_w;
VAR_OHSUB         436 libavfilter/vf_scale.c     scale->var_values[VAR_OHSUB] = 1 << out_desc->log2_chroma_w;
VAR_OHSUB         219 libavfilter/vf_zscale.c     var_values[VAR_OHSUB] = 1 << out_desc->log2_chroma_w;