From 71271614263facf6daa4e90e549fd42a6869f01e Mon Sep 17 00:00:00 2001
From: Maksim Shabunin <maksim.shabunin@gmail.com>
Date: Mon, 6 May 2024 20:43:52 +0300
Subject: [PATCH] videoio: decreased log level for failed backends in
 VideoCapture and VideoWriter open

---
 modules/videoio/src/cap.cpp | 48 ++++++++++++++++++-------------------
 1 file changed, 24 insertions(+), 24 deletions(-)

diff --git a/modules/videoio/src/cap.cpp b/modules/videoio/src/cap.cpp
index be159062e3..f8572aad08 100644
--- a/modules/videoio/src/cap.cpp
+++ b/modules/videoio/src/cap.cpp
@@ -161,9 +161,9 @@ bool VideoCapture::open(const String& filename, int apiPreference, const std::ve
                     {
                         throw;
                     }
-                    CV_LOG_ERROR(NULL,
-                                 cv::format("VIDEOIO(%s): raised OpenCV exception:\n\n%s\n",
-                                            info.name, e.what()));
+                    CV_LOG_WARNING(NULL,
+                                   cv::format("VIDEOIO(%s): raised OpenCV exception:\n\n%s\n",
+                                              info.name, e.what()));
                 }
                 catch (const std::exception& e)
                 {
@@ -171,8 +171,8 @@ bool VideoCapture::open(const String& filename, int apiPreference, const std::ve
                     {
                         throw;
                     }
-                    CV_LOG_ERROR(NULL, cv::format("VIDEOIO(%s): raised C++ exception:\n\n%s\n",
-                                                  info.name, e.what()));
+                    CV_LOG_WARNING(NULL, cv::format("VIDEOIO(%s): raised C++ exception:\n\n%s\n",
+                                                    info.name, e.what()));
                 }
                 catch (...)
                 {
@@ -180,9 +180,9 @@ bool VideoCapture::open(const String& filename, int apiPreference, const std::ve
                     {
                         throw;
                     }
-                    CV_LOG_ERROR(NULL,
-                                 cv::format("VIDEOIO(%s): raised unknown C++ exception!\n\n",
-                                            info.name));
+                    CV_LOG_WARNING(NULL,
+                                   cv::format("VIDEOIO(%s): raised unknown C++ exception!\n\n",
+                                              info.name));
                 }
             }
             else
@@ -299,9 +299,9 @@ bool VideoCapture::open(int cameraNum, int apiPreference, const std::vector<int>
                     {
                         throw;
                     }
-                    CV_LOG_ERROR(NULL,
-                                 cv::format("VIDEOIO(%s): raised OpenCV exception:\n\n%s\n",
-                                            info.name, e.what()));
+                    CV_LOG_WARNING(NULL,
+                                   cv::format("VIDEOIO(%s): raised OpenCV exception:\n\n%s\n",
+                                              info.name, e.what()));
                 }
                 catch (const std::exception& e)
                 {
@@ -309,8 +309,8 @@ bool VideoCapture::open(int cameraNum, int apiPreference, const std::vector<int>
                     {
                         throw;
                     }
-                    CV_LOG_ERROR(NULL, cv::format("VIDEOIO(%s): raised C++ exception:\n\n%s\n",
-                                                  info.name, e.what()));
+                    CV_LOG_WARNING(NULL, cv::format("VIDEOIO(%s): raised C++ exception:\n\n%s\n",
+                                                    info.name, e.what()));
                 }
                 catch (...)
                 {
@@ -318,9 +318,9 @@ bool VideoCapture::open(int cameraNum, int apiPreference, const std::vector<int>
                     {
                         throw;
                     }
-                    CV_LOG_ERROR(NULL,
-                                 cv::format("VIDEOIO(%s): raised unknown C++ exception!\n\n",
-                                            info.name));
+                    CV_LOG_WARNING(NULL,
+                                   cv::format("VIDEOIO(%s): raised unknown C++ exception!\n\n",
+                                              info.name));
                 }
             }
             else
@@ -640,20 +640,20 @@ bool VideoWriter::open(const String& filename, int apiPreference, int fourcc, do
                 }
                 catch (const cv::Exception& e)
                 {
-                    CV_LOG_ERROR(NULL,
-                                 cv::format("VIDEOIO(%s): raised OpenCV exception:\n\n%s\n",
-                                            info.name, e.what()));
+                    CV_LOG_WARNING(NULL,
+                                   cv::format("VIDEOIO(%s): raised OpenCV exception:\n\n%s\n",
+                                              info.name, e.what()));
                 }
                 catch (const std::exception& e)
                 {
-                    CV_LOG_ERROR(NULL, cv::format("VIDEOIO(%s): raised C++ exception:\n\n%s\n",
-                                                  info.name, e.what()));
+                    CV_LOG_WARNING(NULL, cv::format("VIDEOIO(%s): raised C++ exception:\n\n%s\n",
+                                                    info.name, e.what()));
                 }
                 catch (...)
                 {
-                    CV_LOG_ERROR(NULL,
-                                 cv::format("VIDEOIO(%s): raised unknown C++ exception!\n\n",
-                                            info.name));
+                    CV_LOG_WARNING(NULL,
+                                   cv::format("VIDEOIO(%s): raised unknown C++ exception!\n\n",
+                                              info.name));
                 }
             }
             else