UNIT_BPM           74 libavfilter/af_apulsator.c     {   "bpm",                  NULL, 0,                 AV_OPT_TYPE_CONST,  {.i64=UNIT_BPM},  0,          0, FLAGS, "timing" },
UNIT_BPM          209 libavfilter/af_apulsator.c     case UNIT_BPM:  freq = s->bpm / 60;         break;