On Sat, 11 Jun 2016, Michael Niedermayer wrote:

On Sat, Jun 11, 2016 at 08:33:42PM +0200, Marton Balint wrote:
Signed-off-by: Marton Balint <c...@passwd.hu>
---
 libavformat/internal.h | 1 +
 libavformat/mux.c      | 5 +++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/libavformat/internal.h b/libavformat/internal.h
index 40ba089..b6c2020 100644
--- a/libavformat/internal.h
+++ b/libavformat/internal.h
@@ -124,6 +124,7 @@ struct AVFormatInternal {
      * Whether or not a header has already been written
      */
     int header_written;
+    int write_header_ret;
 };

 struct AVStreamInternal {
diff --git a/libavformat/mux.c b/libavformat/mux.c
index 08ed940..b1b65a1 100644
--- a/libavformat/mux.c
+++ b/libavformat/mux.c
@@ -479,6 +479,7 @@ static int write_header_internal(AVFormatContext *s)
         int ret = s->oformat->write_header(s);
         if (ret >= 0 && s->pb && s->pb->error < 0)
             ret = s->pb->error;
+        s->internal->write_header_ret = ret;

would
header_written = ret
be simpler ?

I can change it, but I found it a little less readable.

Regards,
Marton
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