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Wireshark-users: Re: [Wireshark-users] capturing msn web cam traffic with wireshark.

From: "Anders Broman" <a.broman@xxxxxxxxx>
Date: Tue, 24 Apr 2007 07:51:36 +0200
I think the msn client uses a proprietary protocol NOT SIP.
Try to google for msn protocols. There seems to be analysers for that
protocol out there.

Windows messenger uses SIP.
Best regards

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[mailto:wireshark-users-bounces@xxxxxxxxxxxxx] För Wonkyun*^^* Lee
Skickat: den 23 april 2007 03:06
Till: wireshark-users@xxxxxxxxxxxxx
Ämne: Re: [Wireshark-users] capturing msn web cam traffic with wireshark.

can you guys give me your hand? b/c i don't have any other one who can help 
me about these things.

i am currently a senior in an university, and trying to write a graduation 
thesis about msn video conversation and its codec , frame rate, ...
and analyze the changes while i limit the bandwidth of connection..

a file i attach here is a capture file using msn video conversation.
i decoded it with RTP, in that way, i can find some frames with the payload 
type unknown(72), i think these frames are the video frames, and can 
calculate frame rates of video by counting these frames,
is that right?

Also, i cannot find any sip protocol, but from the site you told 
me(http://www.hypothetic.org/docs/msn/client/invitation_types.php), it uses 
sip protocol with video conversation.
i don't know where i can find this protocol to see negotiation of 
connection; like QCIF, CIF, bit rates, etc.

Could you plz help me with this stuff, all i need is just little help to 
analyze frames.
and whether i can do anaylize video packets or not.


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