DITHERING_SIERRA2  110 libavfilter/vf_paletteuse.c         { "sierra2",         "Frankie Sierra dithering v2 (error diffusion)",                          0, AV_OPT_TYPE_CONST, {.i64=DITHERING_SIERRA2},         INT_MIN, INT_MAX, FLAGS, "dithering_mode" },
DITHERING_SIERRA2  427 libavfilter/vf_paletteuse.c             } else if (dither == DITHERING_SIERRA2) {
DITHERING_SIERRA2  969 libavfilter/vf_paletteuse.c     DEFINE_SET_FRAME(color_search_macro, color_search##_##sierra2,         DITHERING_SIERRA2)           \