PLANE_U            52 libavfilter/vf_extractplanes.c     {      "u", "set u plane",     0, AV_OPT_TYPE_CONST, {.i64=PLANE_U}, 0, 0, FLAGS, "flags"},
PLANE_U           144 libavfilter/vf_extractplanes.c                                 ((desc->nb_components > 2) ? PLANE_U|PLANE_V : 0)) |