From aa247198439394144d1d8ef33534857389c10e60 Mon Sep 17 00:00:00 2001
From: Paul B Mahol <onemda@gmail.com>
Date: Tue, 17 Jan 2023 15:35:07 +0100
Subject: [PATCH] avfilter/vsrc_sierpinski: set video frame duration

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

diff --git a/libavfilter/vsrc_sierpinski.c b/libavfilter/vsrc_sierpinski.c
index 898fb5ae54..72b28b1bd7 100644
--- a/libavfilter/vsrc_sierpinski.c
+++ b/libavfilter/vsrc_sierpinski.c
@@ -196,6 +196,7 @@ static int sierpinski_request_frame(AVFilterLink *link)
 
     frame->sample_aspect_ratio = (AVRational) {1, 1};
     frame->pts = s->pts++;
+    frame->duration = 1;
 
     draw_sierpinski(link->src, frame);