From cffb00d2625747e77a89a2cbed3e51ce04196aad Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Wed, 11 May 2016 00:31:31 +0100
Subject: Fix crash with no video.

---
 src/lib/ffmpeg_content.cc | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

(limited to 'src/lib/ffmpeg_content.cc')

diff --git a/src/lib/ffmpeg_content.cc b/src/lib/ffmpeg_content.cc
index 32c2dee8b..fdbdd4eb5 100644
--- a/src/lib/ffmpeg_content.cc
+++ b/src/lib/ffmpeg_content.cc
@@ -276,12 +276,19 @@ FFmpegContent::technical_summary () const
 
 	string filt = Filter::ffmpeg_string (_filters);
 
-	return Content::technical_summary() + " - "
-		+ video->technical_summary() + " - "
-		+ audio->technical_summary() + " - "
-		+ String::compose (
-			"ffmpeg: audio %1 subtitle %2 filters %3", as, ss, filt
-			);
+	string s = Content::technical_summary ();
+
+	if (video) {
+		s += " - " + video->technical_summary ();
+	}
+
+	if (audio) {
+		s += " - " + audio->technical_summary ();
+	}
+
+	return s + String::compose (
+		"ffmpeg: audio %1 subtitle %2 filters %3", as, ss, filt
+		);
 }
 
 void
-- 
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