From 137ec1c84670e1cbb1d143d46acc9f45d17b05de Mon Sep 17 00:00:00 2001
From: Maksim Shabunin <maksim.shabunin@gmail.com>
Date: Tue, 2 Mar 2021 10:59:08 +0300
Subject: [PATCH] videoio: av_frame_unref compilation fix

---
 modules/videoio/src/cap_ffmpeg_impl.hpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/modules/videoio/src/cap_ffmpeg_impl.hpp b/modules/videoio/src/cap_ffmpeg_impl.hpp
index c0e3b4a1e9..281557d8e2 100644
--- a/modules/videoio/src/cap_ffmpeg_impl.hpp
+++ b/modules/videoio/src/cap_ffmpeg_impl.hpp
@@ -1469,9 +1469,12 @@ bool CvCapture_FFMPEG::retrieveFrame(int, unsigned char** data, int* step, int*
     *height = frame.height;
     *cn = frame.cn;
 
-    if (sw_picture != picture) {
+#if USE_AV_HW_CODECS
+    if (sw_picture != picture)
+    {
         av_frame_unref(sw_picture);
     }
+#endif
     return true;
 }