From 6db26d9f7b48080423cdeabbd64c69959870a90b Mon Sep 17 00:00:00 2001
From: WarmUpTill <WarmUpTill@web.de>
Date: Sun, 2 Apr 2023 19:18:32 +0200
Subject: [PATCH] Fix crash when using OCR check of video condition

---
 src/macro-external/video/opencv-helpers.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/macro-external/video/opencv-helpers.cpp b/src/macro-external/video/opencv-helpers.cpp
index a5f620b0..dffeec02 100644
--- a/src/macro-external/video/opencv-helpers.cpp
+++ b/src/macro-external/video/opencv-helpers.cpp
@@ -147,6 +147,10 @@ cv::Mat preprocessForOCR(const QImage &image, const QColor &color)
 std::string runOCR(tesseract::TessBaseAPI *ocr, const QImage &image,
 		   const QColor &color)
 {
+	if (image.isNull()) {
+		return "";
+	}
+
 #ifdef OCR_SUPPORT
 	auto mat = preprocessForOCR(image, color);
 	ocr->SetImage(mat.data, mat.cols, mat.rows, 1, mat.step);