From e0bc798ce5a19952317c87f6e9e551223e3a0159 Mon Sep 17 00:00:00 2001
From: Paul B Mahol <onemda@gmail.com>
Date: Fri, 25 Nov 2022 19:48:31 +0100
Subject: [PATCH] avfilter/f_ebur128: fix crash when using vflip filter

---
 libavfilter/f_ebur128.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavfilter/f_ebur128.c b/libavfilter/f_ebur128.c
index 298bbaa9d9..8afab37fdb 100644
--- a/libavfilter/f_ebur128.c
+++ b/libavfilter/f_ebur128.c
@@ -337,7 +337,8 @@ static int config_video_output(AVFilterLink *outlink)
         return AVERROR(ENOMEM);
 
     /* black background */
-    memset(outpicref->data[0], 0, ebur128->h * outpicref->linesize[0]);
+    for (int y = 0; y < ebur128->h; y++)
+        memset(outpicref->data[0] + y * outpicref->linesize[0], 0, ebur128->w * 3);
 
     /* draw LU legends */
     drawtext(outpicref, PAD, PAD+16, FONT8, font_colors+3, " LU");