From 7108fbbd446f7e895460e64a3e789f4665c90b0b Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Tue, 9 May 2023 01:41:31 +0200
Subject: [PATCH] Don't edit start trim unless it's necessary.

---
 src/lib/content.cc | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/lib/content.cc b/src/lib/content.cc
index e77a3638c..97edc7c89 100644
--- a/src/lib/content.cc
+++ b/src/lib/content.cc
@@ -261,7 +261,11 @@ Content::set_trim_start(shared_ptr<const Film> film, ContentTime t)
 
 	{
 		boost::mutex::scoped_lock lm (_mutex);
-		_trim_start = t;
+		if (_trim_start == t) {
+			cc.abort();
+		} else {
+			_trim_start = t;
+		}
 	}
 }
 
-- 
2.30.2