From a22dd28e0272ec0f1cfee8811d3f5f0392827c65 Mon Sep 17 00:00:00 2001
From: Alexander Alekhin <alexander.a.alekhin@gmail.com>
Date: Mon, 20 Dec 2021 15:03:21 +0000
Subject: [PATCH] videoio: fix ffmpeg standalone build

---
 modules/videoio/src/cap_ffmpeg_impl.hpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/modules/videoio/src/cap_ffmpeg_impl.hpp b/modules/videoio/src/cap_ffmpeg_impl.hpp
index d5be759f43..a724d7f724 100644
--- a/modules/videoio/src/cap_ffmpeg_impl.hpp
+++ b/modules/videoio/src/cap_ffmpeg_impl.hpp
@@ -67,6 +67,10 @@
 #ifndef CV_UNUSED  // Required for standalone compilation mode (OpenCV defines this in base.hpp)
 #define CV_UNUSED(name) (void)name
 #endif
+#ifndef CV_Assert  // Required for standalone compilation mode (OpenCV defines this in base.hpp)
+#include <assert.h>
+#define CV_Assert(expr) assert(expr)
+#endif
 
 #ifdef __cplusplus
 extern "C" {