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Attempt seeking to write EBML master sizes even if streamed

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Most EBML masters are much smaller than IO_BUFFER_SIZE and thus the size
can be updated. This makes parsing the resulting files easier.

Originally committed as revision 22197 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
David Conrad 2010-03-04 08:53:00 +00:00
parent ab2a302834
commit 2529bb3019
1 changed files with 1 additions and 4 deletions
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5
libavformat/matroskaenc.c
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@ -218,11 +218,8 @@ static void end_ebml_master(ByteIOContext *pb, ebml_master master)
{
int64_t pos = url_ftell(pb);
// leave the unknown size for masters when streaming
if (url_is_streamed(pb))
if (url_fseek(pb, master.pos - master.sizebytes, SEEK_SET) < 0)
return;
url_fseek(pb, master.pos - master.sizebytes, SEEK_SET);
put_ebml_num(pb, pos - master.pos, master.sizebytes);
url_fseek(pb, pos, SEEK_SET);
}