From 1419bf0551be3e40025e15343a97dc05764870a1 Mon Sep 17 00:00:00 2001 From: Paul B Mahol Date: Thu, 27 Aug 2020 14:42:44 +0200 Subject: [PATCH] avfilter/vf_xfade: do not use alpha for average rgb color --- libavfilter/vf_xfade.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/libavfilter/vf_xfade.c b/libavfilter/vf_xfade.c index 05fa32a4db..adfcd759a8 100644 --- a/libavfilter/vf_xfade.c +++ b/libavfilter/vf_xfade.c @@ -1377,15 +1377,16 @@ static void fadegrays##name##_transition(AVFilterContext *ctx, y * a->linesize[p]); \ const type *xf1 = (const type *)(b->data[p] + \ y * b->linesize[p]); \ - bg[0][0] += xf0[x]; \ - bg[1][0] += xf1[x]; \ if (p == 3) { \ bg[0][3] = xf0[x]; \ bg[1][3] = xf1[x]; \ + } else { \ + bg[0][0] += xf0[x]; \ + bg[1][0] += xf1[x]; \ } \ } \ - bg[0][0] = bg[0][0] / s->nb_planes; \ - bg[1][0] = bg[1][0] / s->nb_planes; \ + bg[0][0] = bg[0][0] / 3; \ + bg[1][0] = bg[1][0] / 3; \ bg[0][1] = bg[0][2] = bg[0][0]; \ bg[1][1] = bg[1][2] = bg[1][0]; \ } else { \