Wireshark-bugs: [Wireshark-bugs] [Bug 3768] New: RTP conversion to audio files gives different l
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Wed, 22 Jul 2009 12:46:40 -0700 (PDT)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=3768

           Summary: RTP conversion to audio files gives different level.
           Product: Wireshark
           Version: 1.2.1
          Platform: All
        OS/Version: Windows XP
            Status: NEW
          Severity: Normal
          Priority: Medium
         Component: Wireshark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: mhuet@xxxxxxxxxxxx
                CC: mhuet@xxxxxxxxxxxx


Build Information:

Version 1.2.1 (SVN Rev 29141)

Copyright 1998-2009 Gerald Combs <gerald@xxxxxxxxxxxxx> and contributors.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Compiled with GTK+ 2.16.2, with GLib 2.20.3, with WinPcap (version unknown),
with libz 1.2.3, without POSIX capabilities, with libpcre 7.0, with SMI 0.4.8,
with c-ares 1.6.0, with Lua 5.1, with GnuTLS 2.8.1, with Gcrypt 1.4.4, with MIT
Kerberos, with GeoIP, with PortAudio V19-devel (built Jul 19 2009), with
AirPcap.

Running on Windows XP Service Pack 2, build 2600, with WinPcap version 4.1
beta5
(packet.dll version 4.1.0.1452), based on libpcap version 1.0.0, GnuTLS 2.8.1,
Gcrypt 1.4.4, without AirPcap.

Built using Microsoft Visual C++ 9.0 build 30729

Wireshark is Open Source Software released under the GNU General Public
License.

Check the man page and http://www.wireshark.org for more information.
--
Subject: RTP conversion to audio files gives different level.

I am using Wireshark version 1.2.1 on Windows XP.

-First issue:

I'm using wireshark to analyze the level of audio on the network between a
phone gateway and a soft phone. Both ends send continuous tones one after the
other.

>From the “Telephony” menu, “RTP”, “show all streams”, I'm
converting the RPT to audio file to analyze them.

When selecting xxx.xxx.xxx.001 pressing [analyze] and [save payload] (selecting
forward and .au) for a file audio1.au. The audio level of this file gives me
-18 dBV.

When selecting xxx.xxx.xxx.001 and pressing [Find reverse] pressing [analyze]
and [save payload] (selecting both and .au) for a file audio2.au.the audio
level in that file (same tone as in audio1.au) will be 6 dB lower at -24 dB.

Is there any good reason for this?

-Second issue

With version 1.2.1

Selecting xxx.xxx.xxx.001 and pressing [Find reverse] pressing [analyze] and
[save payload] (selecting both and .au). The audio file will place the audio
from xxx.xxx.xxx.001 at the beginning add a gap and place the audio of
xxx.xxx.xxx.002 after.

Is there a way to get the stream of audio be merge like in real time. It uses
to function that way with version 1.0.0.


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