From 40aa8aa8621ebcedfc1b6e047fe0e25f54bd90ff Mon Sep 17 00:00:00 2001
From: Alexander Alekhin <alexander.alekhin@intel.com>
Date: Thu, 10 Nov 2016 15:55:47 +0300
Subject: [PATCH] ffmpeg: check return value

---
 modules/videoio/src/cap_ffmpeg_impl.hpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/modules/videoio/src/cap_ffmpeg_impl.hpp b/modules/videoio/src/cap_ffmpeg_impl.hpp
index e7ece78..daa235e 100644
--- a/modules/videoio/src/cap_ffmpeg_impl.hpp
+++ b/modules/videoio/src/cap_ffmpeg_impl.hpp
@@ -2455,11 +2455,14 @@ bool OutputMediaStream_FFMPEG::open(const char* fileName, int width, int height,
     }
 
     // write the stream header, if any
+    int header_err =
     #if LIBAVFORMAT_BUILD < CALC_FFMPEG_VERSION(53, 2, 0)
         av_write_header(oc_);
     #else
         avformat_write_header(oc_, NULL);
     #endif
+    if (header_err != 0)
+        return false;
 
     return true;
 }
-- 
2.7.4