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Wireshark-bugs: [Wireshark-bugs] [Bug 4338] New: mp2t: Implementing PCR clock measurements and a

Date: Fri, 18 Dec 2009 05:31:25 -0800 (PST)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=4338

           Summary: mp2t: Implementing PCR clock measurements and analysis
           Product: Wireshark
           Version: SVN
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: Low
         Component: Wireshark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: jdb@xxxxxxx


Build Information:
wireshark 1.3.3

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+ 2.16.1, with GLib 2.20.1, with libpcap 1.1-PRE-CVS, with
libz
1.2.3.3, without POSIX capabilities, without libpcre, without SMI, without
c-ares, without ADNS, without Lua, without Python, without GnuTLS, with Gcrypt
1.4.1, with MIT Kerberos, without GeoIP, without PortAudio, without AirPcap,
with new_packet_list.

Running on Linux 2.6.32-rc3-net-next-dev-mp2t, with libpcap version
1.1-PRE-CVS,
Gcrypt 1.4.1.

Built using gcc 4.3.3.

--
MPEG2 Transport Stream (mp2t / RFC 2250 / ISO/IEC 13818-1):
 Implementing PCR clock measurements and analysis.

The PCR clock and bytes deltas values are recorded, between to PCR
packets.  First of all the PCR delta is converted to a human
understandable time in ms.  Using the byte delta we calculate the
bandwidth, that the streamer intended to transmit with.

Using this together with IO-graph provides a power full tool to analyse the
quality of your streamers PCR clock.  Advanced use of IO-graph can also show
the corrolation between the PCR bandwidth and the capture time bandwidth.

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