[Ffmpeg-devel] [PATCH] asf seek back at end of file after rewriting header

Baptiste Coudurier baptiste.coudurier
Sat Apr 14 04:13:15 CEST 2007

M?ns Rullg?rd wrote:
> Baptiste Coudurier <baptiste.coudurier at smartjog.com> writes:
>> Michael Niedermayer wrote:
>>> Hi
>>> On Sat, Apr 14, 2007 at 12:20:44AM +0200, Baptiste Coudurier wrote:
>>>> Michael Niedermayer wrote:
>>>>> Hi
>>>>> On Fri, Apr 13, 2007 at 11:52:41PM +0200, Baptiste Coudurier wrote:
>>>>>> Hi
>>>>>> $subj.
>>>>> Why?
>>>> Because without that, url_ftell will not report file size,
>>> you mean url_ftell() will not return file size after muxing an asf file has
>>> finished
>>> but why should url_ftell() behave like that?!
>> Why should stream position after write_trailer be at any random location?
> The file shouldn't be accessed after this, so the location shouldn't
> matter.  Now it seems ffmpeg.c assumes that the file position will
> always be at the end.  Rather than requiring every muxer to ensure
> this, I agree that it's better to do things properly in ffmpeg.c.

I think differently, IMHO expecting that after write_trailer,
ByteIOContext is at the end of the file does not seem weird,
and if file should not be accessed after write_trailer, how should you
know how big the file is ? f/stat ? url_fsize ? url_fsize does seek.

Baptiste COUDURIER                              GnuPG Key Id: 0x5C1ABAAA
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