From 027a6534067edc6fe9390d9ecc750e9982d5437c Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Fri, 29 Mar 2024 23:58:36 +0100
Subject: [PATCH] Fix crash introduced in previous commit.

---
 src/lib/ffmpeg_examiner.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/lib/ffmpeg_examiner.cc b/src/lib/ffmpeg_examiner.cc
index 787198e4a..51ade8e89 100644
--- a/src/lib/ffmpeg_examiner.cc
+++ b/src/lib/ffmpeg_examiner.cc
@@ -195,7 +195,9 @@ FFmpegExaminer::FFmpegExaminer (shared_ptr<const FFmpegContent> c, shared_ptr<Jo
 			_rotation = - av_display_rotation_get ((int32_t*) displaymatrix);
 		}
 
-		_rotation = *_rotation - 360 * floor (*_rotation / 360 + 0.9 / 360);
+		if (_rotation) {
+			_rotation = *_rotation - 360 * floor (*_rotation / 360 + 0.9 / 360);
+		}
 	}
 
 	LOG_GENERAL("Temporal reference was %1", temporal_reference);
-- 
2.30.2