From 5945288818b98682884888e3800893b2f2ac7507 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20Ekstr=C3=B6m?= <jeebjp@gmail.com>
Date: Wed, 7 Apr 2021 21:17:04 +0300
Subject: [PATCH] avformat/img2dec: set r_frame_rate in addition to
 avg_frame_rate

Apparently for various image sequences libavformat/utils.c can
calculate rather fancy r_frame_rate values, such as `186/1921`,
and since ffmpeg.c utilizes r_frame_rate for the filter chain
time base, this can quite deteriorate the output frame timing - even
though the user has requested the image sequence to be interpreted
at a specific, constant frame rate.
---
 libavformat/img2dec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/img2dec.c b/libavformat/img2dec.c
index be7149bb2f..7b03cb2af1 100644
--- a/libavformat/img2dec.c
+++ b/libavformat/img2dec.c
@@ -222,7 +222,7 @@ int ff_img_read_header(AVFormatContext *s1)
         avpriv_set_pts_info(st, 64, 1, 1);
     else {
         avpriv_set_pts_info(st, 64, s->framerate.den, s->framerate.num);
-        st->avg_frame_rate = s->framerate;
+        st->avg_frame_rate = st->r_frame_rate = s->framerate;
     }
 
     if (s->width && s->height) {