HARMONIC_MEAN      83 libavfilter/vf_deflicker.c         { "hm",      "harmonic mean",   0, AV_OPT_TYPE_CONST, {.i64=HARMONIC_MEAN},    0, 0, FLAGS, "mode" },
HARMONIC_MEAN     351 libavfilter/vf_deflicker.c     case HARMONIC_MEAN:   s->get_factor = get_hm_factor;     break;