From a1240c0522d10b937ef5fb88c2134452ae352fb5 Mon Sep 17 00:00:00 2001
From: Marton Balint <cus@passwd.hu>
Date: Thu, 15 Oct 2015 00:06:12 +0200
Subject: [PATCH] ffmpeg: log failed av_write_trailer

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Marton Balint <cus@passwd.hu>
---
 ffmpeg.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ffmpeg.c b/ffmpeg.c
index 36a68fbd4c..252bc0df58 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -4104,7 +4104,9 @@ static int transcode(void)
     /* write the trailer if needed and close file */
     for (i = 0; i < nb_output_files; i++) {
         os = output_files[i]->ctx;
-        av_write_trailer(os);
+        if ((ret = av_write_trailer(os)) < 0) {
+            av_log(NULL, AV_LOG_ERROR, "Error writing trailer of %s: %s", os->filename, av_err2str(ret));
+        }
     }
 
     /* dump report by using the first video and audio streams */
-- 
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