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avformat/mux: Only write HEADER marker if format has .write_header 

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2023-09-02 15:06:44 +02:00
parent 8238bc0b5e
commit 5869407da2
1 changed files with 2 additions and 2 deletions
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4
libavformat/mux.c
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@ -464,9 +464,9 @@ int avformat_write_header(AVFormatContext *s, AVDictionary **options)
if ((ret = avformat_init_output(s, options)) < 0)
return ret;
if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_HEADER);
if (ffofmt(s->oformat)->write_header) {
if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_HEADER);
ret = ffofmt(s->oformat)->write_header(s);
if (ret >= 0 && s->pb && s->pb->error < 0)
ret = s->pb->error;