[Tcpick-project] Help Extracting TCP Data from Stream

[Kiptoo M. <km...@gm...>]

Hello,

I'm a newbie to tcpick and would greatly appreciate your help. I'm trying
to grab raw video data from a TCP stream, and here is what I've tried so
far:

1. Capture packets while a Youtube video is playing, save capture to a pcap
file using tcpdump
2. Use tcpick to rebuild and extract TCP data from the saved pcap file:

sudo tcpick -r pixar.pcap -wHs -C, as per the notes at
http://tcpick.sourceforge.net/?t=1&p=OPTIONS.
However, the problem is that no file is saved. I was expecting to see a
*.tcpick file to appear after the extraction. Additionally, I see the
following terminal output:

Starting tcpick 0.2.1 at 2012-09-11 18:03 EDT

Timeout for connections is 600

tcpick: reading from pixar.pcap

tcpick: done reading from pixar.pcap


4171 packets captured

0 tcp sessions detected


When I capture from a live stream, say using "sudo tcpick -i eth0", I
experience a segmantation fault.

I'm using Ubuntu 10.04 (lucid), 64 bit.

Eventually, I would like to capture the stream in real time from, say, eth0
and pipe the raw data to an encoding module such as ffmpeg.


Thanks much!

Kiptoo