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Check there is a stream before writing header.

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Patch by Tomas Härdin: $(name) punto hardin chez codemill dot se

Originally committed as revision 21186 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Tomas Härdin 2010-01-13 14:32:48 +00:00 committed by Benoit Fouet
parent ef5e7fb253
commit 094a63f1f6
1 changed files with 5 additions and 0 deletions
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5
libavformat/utils.c
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@ -2501,6 +2501,11 @@ int av_write_header(AVFormatContext *s)
AVStream *st;
// some sanity checks
if (s->nb_streams == 0) {
av_log(s, AV_LOG_ERROR, "no streams\n");
return -1;
}
for(i=0;i<s->nb_streams;i++) {
st = s->streams[i];