AVCOL_TRC_BT2020_12  439 libavcodec/options_table.h {"bt2020_12bit", "BT.2020 - 12 bit", 0, AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT2020_12 },    INT_MIN, INT_MAX, V|E|D, "color_trc_type"},
AVCOL_TRC_BT2020_12   33 libavutil/color_utils.c         case AVCOL_TRC_BT2020_12: