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-rw-r--r--libavformat/nutenc.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/libavformat/nutenc.c b/libavformat/nutenc.c
index df5dc6fdf7..4ca761ab40 100644
--- a/libavformat/nutenc.c
+++ b/libavformat/nutenc.c
@@ -584,7 +584,8 @@ static int write_header(AVFormatContext *s){
nut->avf= s;
nut->stream = av_mallocz(sizeof(StreamContext)*s->nb_streams);
- nut->chapter = av_mallocz(sizeof(ChapterContext)*s->nb_chapters);
+ if (s->nb_chapters)
+ nut->chapter = av_mallocz(sizeof(ChapterContext)*s->nb_chapters);
nut->time_base= av_mallocz(sizeof(AVRational )*(s->nb_streams +
s->nb_chapters));