BLEND_DIFFERENCE128  115 libavfilter/vf_blend.c     { "difference128", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIFFERENCE128}, 0, 0, FLAGS, "mode" },\
BLEND_DIFFERENCE128  324 libavfilter/vf_blend.c         case BLEND_DIFFERENCE128: param->blend = blend_difference128; break;