From e0e4be590ce1f8aac1d7b9f930049dfb67e0d15c Mon Sep 17 00:00:00 2001
From: Aurelien Jacobs <aurel@gnuage.org>
Date: Thu, 15 Jan 2009 00:42:57 +0000
Subject: [PATCH] matroskadec: ensure we only consider chapters which are
 properly ordered

Originally committed as revision 16612 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavformat/matroskadec.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c
index e23d03b897f..e239a557e93 100644
--- a/libavformat/matroskadec.c
+++ b/libavformat/matroskadec.c
@@ -1076,6 +1076,7 @@ static int matroska_read_header(AVFormatContext *s, AVFormatParameters *ap)
     EbmlList *index_list;
     MatroskaIndex *index;
     int index_scale = 1;
+    uint64_t max_start = 0;
     Ebml ebml = { 0 };
     AVStream *st;
     int i, j;
@@ -1365,10 +1366,13 @@ static int matroska_read_header(AVFormatContext *s, AVFormatParameters *ap)
 
     chapters = chapters_list->elem;
     for (i=0; i<chapters_list->nb_elem; i++)
-        if (chapters[i].start != AV_NOPTS_VALUE && chapters[i].uid)
+        if (chapters[i].start != AV_NOPTS_VALUE && chapters[i].uid
+            && (max_start==0 || chapters[i].start > max_start)) {
             ff_new_chapter(s, chapters[i].uid, (AVRational){1, 1000000000},
                            chapters[i].start, chapters[i].end,
                            chapters[i].title);
+            max_start = chapters[i].start;
+        }
 
     index_list = &matroska->index;
     index = index_list->elem;
-- 
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