On Sat, 11 Jun 2016, Marton Balint wrote:

Docs clearly states that av_write_trailer should only be called if
avformat_write_header was successful, therefore we have to deinit if we return
failure.

Signed-off-by: Marton Balint <c...@passwd.hu>
---
libavformat/mux.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/libavformat/mux.c b/libavformat/mux.c
index 91388e3..bef230f 100644
--- a/libavformat/mux.c
+++ b/libavformat/mux.c
@@ -485,14 +485,14 @@ int avformat_write_header(AVFormatContext *s, 
AVDictionary **options)
        if (ret >= 0 && s->pb && s->pb->error < 0)
            ret = s->pb->error;
        if (ret < 0)
-            return ret;
+            goto fail;
        if (s->flush_packets && s->pb && s->pb->error >= 0 && s->flags & 
AVFMT_FLAG_FLUSH_PACKETS)
            avio_flush(s->pb);
        s->internal->header_written = 1;
    }

    if ((ret = init_pts(s)) < 0)
-        return ret;
+        goto fail;

    if (s->avoid_negative_ts < 0) {
        av_assert2(s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_AUTO);
@@ -503,6 +503,11 @@ int avformat_write_header(AVFormatContext *s, AVDictionary 
**options)
    }

    return 0;
+
+fail:
+    if (s->oformat->deinit)
+        s->oformat->deinit(s);
+    return ret;
}

I have applied this as well, as Rodger sent a similar patch to the list and that was approved.

Regards,
Marton
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