OPT_DBL            65 libavfilter/asrc_sine.c     OPT_DBL("frequency",         frequency,            440, 0, DBL_MAX,   "set the sine frequency"),
OPT_DBL            66 libavfilter/asrc_sine.c     OPT_DBL("f",                 frequency,            440, 0, DBL_MAX,   "set the sine frequency"),
OPT_DBL            67 libavfilter/asrc_sine.c     OPT_DBL("beep_factor",       beep_factor,            0, 0, DBL_MAX,   "set the beep fequency factor"),
OPT_DBL            68 libavfilter/asrc_sine.c     OPT_DBL("b",                 beep_factor,            0, 0, DBL_MAX,   "set the beep fequency factor"),