SMOOTHUP          167 libavfilter/vf_xfade.c     {   "smoothup",   "smoothup transition",    0, AV_OPT_TYPE_CONST, {.i64=SMOOTHUP},   0, 0, FLAGS, "transition" },
SMOOTHUP         1410 libavfilter/vf_xfade.c     case SMOOTHUP:   s->transitionf = s->depth <= 8 ? smoothup8_transition   : smoothup16_transition;   break;