Wireshark-bugs: [Wireshark-bugs] [Bug 5498] New: RTP Graph analysis not showing deltas
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Sat, 18 Dec 2010 07:40:30 -0800 (PST)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5498

           Summary: RTP Graph analysis not showing deltas
           Product: Wireshark
           Version: 1.4.1
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: Enhancement
          Priority: Low
         Component: Wireshark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: bernoulli01@xxxxxx


Build Information:
This is from my current installation und WinXP at home, but this also happens
in WS-1.4.1 (and propably earlier) under Debian Linux (and all other
distributions).

Version 1.4.2 (SVN Rev 34959 from /trunk-1.4)

Copyright 1998-2010 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 (32-bit) with GTK+ 2.16.6, with GLib 2.22.4, with WinPcap (version
unknown), with libz 1.2.3, without POSIX capabilities, without libpcre, with
SMI
0.4.8, with c-ares 1.7.1, with Lua 5.1, without Python, with GnuTLS 2.8.5, with
Gcrypt 1.4.5, with MIT Kerberos, with GeoIP, with PortAudio V19-devel (built
Nov
18 2010), with AirPcap.

Running on Windows XP Service Pack 3, build 2600, with WinPcap version 4.1.2
(packet.dll version 4.1.0.2001), based on libpcap version 1.0 branch 1_0_rel0b
(20091008), GnuTLS 2.8.5, Gcrypt 1.4.5, 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.
--
Description:
Dialog RTP Graph analysis is not showing forward and reverse delta. 

Howto reproduce this bug:
[Precondition: Tracefile with rtp data]
Navigate to the RTP stream analysis dialog and from there choose to draw the
analyzed stream. Graphed is jitter and difference, but not delta. As you came
directly from the stream analysis dialog you may miss the deltas. (The first
time I have seen the graph I thought delta eq difference and that there may be
some error - until I checked the code and saw what distinquishes delta and
difference).

Recommended solution:
Add the deltas to the graph.

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