How to extinct humanity

nice Article:
http://www.catonmat.net/blog/set-operations-in-unix-shell/

Soon we will have again lots of fun while practicing martial arts outdoors:

http://www.y-day.de

There are several tools to create flv files from a rtmp stream in linux, two of them being rtmpdump and its fork flvstreamer.
I tried to retrieve a stream where i constantly got ping messages in the process and it just stopped, so i looked for alternative ways.
The one i found was this huge script, which did crash on me: http://ubuntuforums.org/showthread.php?t=1159309
I was unwilling to search for the error or analyze the stream myself, so i came up with the following solution:

1. capture stream with tcpdump
2. extract streaming data with tcpflow
3. pipe data through netcat
4. connect rtmpdump to netcat
5. ???
6. profit!

sudo tcpdump -i <device> -p -s 0 -w <dumpfile> -v tcp src port 1935
tcpflow -r <dumpfile>
cat <streamfile>|netcat -l 1935&
rtmpdump -r "rtmp://localhost/streamer/stream.flv" -o <flvout>

Works quite reliable for me and is not as much code as the script which does not work.
If you end up downloading huge masses of files you can check them using flvtool2 with this script:

#!/bin/sh
if [ "$1" = "" ]
then
	echo "no filename given"
	exit
fi
if [ $(stat -c%s "$1") -eq 0 ]
then
	echo false
	exit
fi
if [ $(stat -c%s "$1") -eq `flvtool2 -P $1 /dev/null|grep filesize|sed 's/[^0-9]//g'` ]
then
	echo true
else
	echo false
fi

It returns "true" or "false", depending if projected filesize and actual filesize are equal, which means an incomplete file returns "false".



Got any questions? Ask me. :>

Some pictures of me wearing my opera shirt during a systema instruction.

An meinen Atem

Oh Odem, du des Lebens Glück
Wie fehlst du mir in diesem Augenblick.
Der Atmosphäre Druck, er lastet schwer
Belastet meine Atmung sehr.

Nur mühsam lässt die Brust sich heben
Im Vakuum, da müsst man leben.
Jedoch da fehlt der Sauerstoff,
und eben dieser fehlt mir doch.

Respiration ich hasse dich,
um vier Uhr morgens - verlässt du mich ?
Ich träume vom Erstickungstod
und wache auf - mit Atemnot.