From 651a1d28691f5afc48d086fafbd8a32003e585ec Mon Sep 17 00:00:00 2001
From: Vladislav Sovrasov <sovrasov.vlad@gmail.com>
Date: Mon, 7 Aug 2017 13:45:00 +0300
Subject: [PATCH] videoio: don't pass zero fps to 3rd-party codecs

---
 modules/videoio/src/cap.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/modules/videoio/src/cap.cpp b/modules/videoio/src/cap.cpp
index 97c3a6447e..8b74111d5a 100644
--- a/modules/videoio/src/cap.cpp
+++ b/modules/videoio/src/cap.cpp
@@ -382,6 +382,8 @@ static CvVideoWriter* cvCreateVideoWriterWithPreference(const char* filename, in
     if(!fourcc || !fps)
         TRY_OPEN(result, cvCreateVideoWriter_Images(filename))
 
+    CV_Assert(result || fps != 0);
+
     switch(apiPreference)
     {
         default: