AVCOL_TRC_SMPTE170M  430 libavcodec/options_table.h {"smpte170m",    "SMPTE 170 M",      0, AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTE170M },    INT_MIN, INT_MAX, V|E|D, "color_trc_type"},
AVCOL_TRC_SMPTE170M 1604 libavformat/movenc.c     case AVCOL_TRC_SMPTE170M: avio_wb16(pb, 1); break; // remapped
AVCOL_TRC_SMPTE170M   29 libavutil/color_utils.c         case AVCOL_TRC_SMPTE170M: