Wireshark-users: Re: [Wireshark-users] Does Wireshark support MP4 payload decoding?
From: "Javier Gálvez Guerrero" <[email protected]>
Date: Tue, 3 Jun 2008 14:48:16 +0200
Sorry but, what are you really offering to me? I can't understand it... sorry, hehe.

2008/6/3 Anders Broman <[email protected]>:
Hi,
There is currently no MP4V-ES payload dissector. I'm not sure how much this overlaps
with other MPEG4 dissectors we have. I have started a mp4ves dissector to begin to
dissect the config parameter in SDP some time ago (very rudaementary) I guess I could check it
in as a starting point ( I'll have to check it's status first) would that be of intrest?
Regards
Anders

________________________________

From: [email protected] on behalf of Javier Gálvez Guerrero
Sent: Tue 6/3/2008 2:01 PM
To: Community support list for Wireshark
Subject: Re: [Wireshark-users] Does Wireshark support MP4 payload decoding?


Hi,


2008/6/3 Anders Broman <[email protected]>:


       Hi,
       What protocol is used to set up the stream? is SDP used?


Yes, the video on demand procedure is started with a RTSP packet exchange with a SDP file with the corresponding parameters. It is properly decoded with Wireshark.




       What Mime type is it MP4V-ES other?


As said before, I have tried with elementary and program streams. In the last case, I have mpeg4-generic MIME type for audio and MP4V-ES for video.




       What do you want decoded?


I would like to catch information regarding which frames are being streamed (I, P or B).

Anyway, have you succeed in decoding this kind of information from the UDP/RTP/MP4 packet stream?




       Regards
       Anders



Thanks for your answer,
Javi




________________________________

       From: [email protected] [mailto:[email protected]] On Behalf Of Javier Gálvez Guerrero
       Sent: den 3 juni 2008 11:37
       To: [email protected]
       Subject: [Wireshark-users] Does Wireshark support MP4 payload decoding?


       Hi all,

       I have searched for this issue in the archive but the question was not answered yet, so here I am.

       I would like to know if Wireshark does support MP4 packets decoding. I am using version 1.0.0 in an Ubuntu Linux 2.6.24-17. I am also using VideoLAN VLC on the VOD server side and on the player client side. I have tried with originally mp4 encoded videos, on-the-fly decoded ones from MPEG-1 and with elementary video streams. They work perfectly (I can stream and watch the videos) but when I try to decode the UDP/RTP packets with Wireshark the payload is marked as unknown. With MPEG-1 it works properly as soon as I have tested.

       So, has anyone succeed in decoding the RTP payload for a MP4 stream (if not with VLC, with which streaming software?)?


       Thank you all,
       Javi


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