From a65adcd8375ba5c57cfd0ba8f9a97edd0113a0fd Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Tue, 30 May 2017 10:10:27 +0100
Subject: [PATCH] Add a debug log for an assertion failure.

---
 src/lib/reel_writer.cc | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/lib/reel_writer.cc b/src/lib/reel_writer.cc
index da79dfc04..13d62f86d 100644
--- a/src/lib/reel_writer.cc
+++ b/src/lib/reel_writer.cc
@@ -389,7 +389,14 @@ ReelWriter::create_reel (list<ReferencedReelAsset> const & refs, list<shared_ptr
 	}
 
 	DCPOMATIC_ASSERT (reel_sound_asset);
-	DCPOMATIC_ASSERT (reel_sound_asset->duration() == _period.duration().frames_round (_film->video_frame_rate ()));
+	if (reel_sound_asset->duration() != _period.duration().frames_round (_film->video_frame_rate ())) {
+		LOG_ERROR (
+			"Reel sound asset has length %1 but reel period is %2",
+			to_string(reel_sound_asset->duration()),
+			to_string(_period.duration().frames_round(_film->video_frame_rate()))
+			);
+		DCPOMATIC_ASSERT (reel_sound_asset->duration() == _period.duration().frames_round (_film->video_frame_rate ()));
+	}
 	reel->add (reel_sound_asset);
 
 	shared_ptr<dcp::ReelSubtitleAsset> reel_subtitle_asset;
-- 
2.30.2