From 64a2d1904b80faf71a322f934be885bee8ecac4a Mon Sep 17 00:00:00 2001
From: Alexander Alekhin <alexander.alekhin@intel.com>
Date: Fri, 11 Nov 2016 16:27:22 +0300
Subject: [PATCH] ffmpeg: backport 7213

Commit:
  6d54abbd0fc64b23ea0b97f3c906cba219b52dc8
---
 modules/highgui/src/cap_ffmpeg_impl.hpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/modules/highgui/src/cap_ffmpeg_impl.hpp b/modules/highgui/src/cap_ffmpeg_impl.hpp
index da05bde324..a934faaa91 100644
--- a/modules/highgui/src/cap_ffmpeg_impl.hpp
+++ b/modules/highgui/src/cap_ffmpeg_impl.hpp
@@ -1482,6 +1482,10 @@ static AVStream *icv_add_video_stream_FFMPEG(AVFormatContext *oc,
     }
 #endif
 
+#if LIBAVCODEC_BUILD >= CALC_FFMPEG_VERSION(52, 42, 0)
+    st->avg_frame_rate = (AVRational){frame_rate, frame_rate_base};
+#endif
+
     return st;
 }