[M4IF Technotes] total playback time of mp4

[XiangHua Jin]

Hello everyone:
   Do you know how to calculate the total playback time of a mp4 file?
Pls give a hint.
Regards
--Xianghua 
-----Original Message-----
From: technotes-admin   lists.m4if.org [mailto:technotes-admin   lists.m4if.
org] On Behalf Of Rob Koenen
Sent: 2002年6月17日 13:31
To: 'Ansari M N'; Rob Koenen; 'AVARO Olivier FTRD/DIH/REN';
technotes   lists.m4if.org
Subject: RE: [M4IF Technotes] Help wanted *****
Ansi,
We are (Olivier is) looking into the MPEG-4 Systems Bitstream issue.
> Got ur message and thanx or ur kind concern. The first
> thing I did reg getting mpeg4 streams is, I visited
> mwif.org. But there I found mpeg4 video or mpeg4 audio
> streams only and no mpeg4 system bitstream I could
> find there.

I guess you mean m4if.org
There are only links on m4if.org by the way, we don not
host streams ourselves.
> Also I downloaded mppeg4 system decoder source code
> from the same site. I managed to compile it
> successfully. To run n check its performance I need a
> mpeg4 sys file as its input. 
> I've downloaded some mp4 and mpg4 files from websites
> Also I'm not sure abt its compliance with mpeg4. 
> The downloaded code doesnt accepts this input n gives
> an error like "Invalid Url"

I do not know which source code you are referring to.
We don't host any on our own site, as I mentioned
Please be more precise.
mp4 files can be found, for instance, here
http://www.apple.com/mpeg4/
http://www.envivio.com/solutions/etv/sample.jsp
(If anyone knows of other mp4 files, let me know.
 We are making an overview of links to MP4 content for the 
 Resources Page)
Rob
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