NTSC             2236 ffmpeg_opt.c           norm = NTSC;
NTSC             2256 ffmpeg_opt.c                           norm = NTSC;
NTSC               80 libavdevice/bktr.c #define VIDEO_FORMAT NTSC
NTSC              163 libavdevice/bktr.c     case NTSC:  h_max = NTSC_HEIGHT;  c = BT848_IFORM_F_NTSCM;    break;
NTSC              268 libavdevice/bktr.c         case NTSC:  s->framerate = av_strdup("ntsc"); break;
NTSC              334 libavdevice/bktr.c     { "NTSC",     "", 0, AV_OPT_TYPE_CONST, {.i64 = NTSC},  0, 0, AV_OPT_FLAG_DECODING_PARAM, "standard" },