VAR_S2R_MAIN_SAR  194 libavfilter/vf_scale.c          vars_w[VAR_S2R_MAIN_SAR]  || vars_h[VAR_S2R_MAIN_SAR]  ||
VAR_S2R_MAIN_SAR  443 libavfilter/vf_scale.c         scale->var_values[VAR_S2R_MAIN_SAR] = main_link->sample_aspect_ratio.num ?
VAR_S2R_MAIN_SAR  446 libavfilter/vf_scale.c             scale->var_values[VAR_S2R_MAIN_A] * scale->var_values[VAR_S2R_MAIN_SAR];