From faac31cc8629053af7cda23cbdea7edc5dd226dc Mon Sep 17 00:00:00 2001
From: Paul B Mahol <onemda@gmail.com>
Date: Fri, 4 Mar 2022 13:37:19 +0100
Subject: [PATCH] avfilter/avf_avectorscope: make frame writable before writing
 to it

---
 libavfilter/avf_avectorscope.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavfilter/avf_avectorscope.c b/libavfilter/avf_avectorscope.c
index ba392153f3..c764405818 100644
--- a/libavfilter/avf_avectorscope.c
+++ b/libavfilter/avf_avectorscope.c
@@ -275,6 +275,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *insamples)
     }
     s->outpicref->pts = insamples->pts;
 
+    av_frame_make_writable(s->outpicref);
     ff_filter_execute(ctx, fade, NULL, NULL, FFMIN(outlink->h, ff_filter_get_nb_threads(ctx)));
 
     if (zoom < 1) {