Merge pull request #16103 from alalek:videoio_ffmpeg_wrapper_version_check

modules/videoio/src/backend_plugin.cpp

@@ -208,10 +208,23 @@ public:
                 CV_LOG_INFO(NULL, "Video I/O: plugin is incompatible: " << lib->getName());
                 return;
             }
-            if (plugin_api_->api_header.opencv_version_major != CV_VERSION_MAJOR ||
-                plugin_api_->api_header.opencv_version_minor != CV_VERSION_MINOR)
+            if (plugin_api_->api_header.opencv_version_major != CV_VERSION_MAJOR)
             {
-                CV_LOG_ERROR(NULL, "Video I/O: wrong OpenCV version used by plugin '" << plugin_api_->api_header.api_description << "': " <<
+                CV_LOG_ERROR(NULL, "Video I/O: wrong OpenCV major version used by plugin '" << plugin_api_->api_header.api_description << "': " <<
+                    cv::format("%d.%d, OpenCV version is '" CV_VERSION "'", plugin_api_->api_header.opencv_version_major, plugin_api_->api_header.opencv_version_minor))
+                plugin_api_ = NULL;
+                return;
+            }
+#ifdef HAVE_FFMPEG_WRAPPER
+            if (plugin_api_->captureAPI == CAP_FFMPEG)
+            {
+                // no checks for OpenCV minor version
+            }
+            else
+#endif
+            if (plugin_api_->api_header.opencv_version_minor != CV_VERSION_MINOR)
+            {
+                CV_LOG_ERROR(NULL, "Video I/O: wrong OpenCV minor version used by plugin '" << plugin_api_->api_header.api_description << "': " <<
                     cv::format("%d.%d, OpenCV version is '" CV_VERSION "'", plugin_api_->api_header.opencv_version_major, plugin_api_->api_header.opencv_version_minor))
                 plugin_api_ = NULL;
                 return;