Finally, I found a free, fast and easy tool to tag MPEG-4 files: MetaZ.
https://github.com/griff/metaz

It’s pretty easy to use. One little detail to be mentioned though:
You can add chapter marks by pasting them in the following format:

00:00:00.000 Intro
00:00:30.000 Antihelden
00:5:00.000 Die Jungs Aus Dem Reihenhaus
00:15:00.000 Fenster Zum Berg
00:20:00.000 Affentanz
00:22:00.000 Manfred Mustermann
00:36:00.000 Solala
00:40:00.000 Safari
00:50:00.000 Liebe & Hass
00:55:45.000 6 Meter 90
01:00:00.000 Blattgold Auf Anthrazit


Wikipedia is a high quality resource for information. And it’s free. You can even download its complete content as XML dumps. For example for the German Wikipedia:

wget -c http://dumps.wikimedia.org/dewiki/latest/dewiki-latest-pages-articles.xml.bz2

Baam & Bua

• HandBrake – MPEG tool
• hexfiend – hex editor
• macfuse, sshfs – user space file systems
• textmate2 – text editor
• wget

e.g. /dev/sdb

partition disk:

fdisk /dev/sdb
new partition: key n
primary partition: key p
partition 1
default values
write: key w

format disk:
mkfs -t ext3 /dev/sdb1

edit /etc/fstab accordingly

diff -qr "path/to/first/dir" "/path/to/second/dir" | grep -v -e 'Thumbs' -e 'DS_Store' | sort > diff.txt

sudo rm /etc/resolv.conf
sudo ln -s /etc/resolvconf/run/resolv.conf /etc/resolv.conf

#!/bin/bash
files=(*)
echo "${files[RANDOM % ${#files[@]}]}"