From 277e9279ccef4fd601cb0d642668960da645a8c9 Mon Sep 17 00:00:00 2001
From: Alexander Alekhin <alexander.a.alekhin@gmail.com>
Date: Mon, 4 Jun 2018 18:38:24 +0000
Subject: [PATCH] videoio(gstreamer): support dumping of VideoWriter pipeline

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

diff --git a/modules/videoio/src/cap_gstreamer.cpp b/modules/videoio/src/cap_gstreamer.cpp
index b18756e580..c3100f56f3 100644
--- a/modules/videoio/src/cap_gstreamer.cpp
+++ b/modules/videoio/src/cap_gstreamer.cpp
@@ -1657,6 +1657,8 @@ bool CvVideoWriter_GStreamer::open( const char * filename, int fourcc,
     }
 #endif
 
+    GST_DEBUG_BIN_TO_DOT_FILE(GST_BIN(pipeline), GST_DEBUG_GRAPH_SHOW_ALL, "write-pipeline");
+
     stateret = gst_element_set_state(GST_ELEMENT(pipeline), GST_STATE_PLAYING);
     if(stateret  == GST_STATE_CHANGE_FAILURE) {
         handleMessage(pipeline);