This is my home in the virtual world, where I write
about things that I want to share. The freely available software that
I've written as well as some of the photographs I've taken over the
years can also be found here. Please use the navigation links on the
right if you are looking for something.
On the 8th and 9th of March 2014 it was unseasonably warm. In fact the temperatures
on both days have been the warmest on those dates since recording began in 1901.
Here in Eindhoven the temperature reached 21 °C today! So I got out the
lawn-chair and enjoyed the sunshine!
tags: New Zealand
At the end of 2013 and beginning of 2014 I spent a month on holiday in NZ, and
great time. Below is a selection of my favorite pictures from that
The comments are interspersed between the pictures. They belong with
the picture above.
The beach at Napier ...
tags: public key
What follows is the public part of the
openpgp key that I use to sign my
e-mail and software packages.
On 2014-03-02 I generated a new 4096-bit key which is going to replace my old
pub 1024D/C321A725 2000-08-29
Key fingerprint = 1A2B 477F 9970 BA3C 2914 ...
Sometimes one has to convert numbers from and to different formats. Below are
some examples in Python that I picked up over time. What you see are excerpts
To and from hexadecimal (base 16):
In [ 1 ]: hex ( 100 )
Out [ 1 ]: '0x64'
In [ 2 ]: int ( 0xa7 )
Out [ 2 ...
This is a recipe that I got from my big sister. She got it from her friend
Charlotte. Thanks to both. :-)
one onion, finely chopped
two big cloves of garlic, finely chopped
one green chili, seeds removed, finely chopped (or some dried chili, like
one carrot peeled and ...
To get from Auckland to Napier I had booked a domestic flight because that
should take only one hour instead of eight by bus!
Do make sure that there is sufficient time between the arrival of your
international flight and the boarding of the domestic flight. We ware slated
On the 18th of December I left for NZ. Compared to my previous journeys I did
not do a stopover but just switched planes. This time in Seoul. This switch
took quite some time; the arrival and departure gates were far apart, even
taking into account that you had to ...
My digital camera can also produce movies, like most camera's these
days. It saves them in AVI format, with relatively poor
compression and uncompressed sound.
So I wrote this
python script to convert these AVI files to Theora / Vorbis
streams in a matroška container. It takes the AVI ...
H.264 video and AAC sound im MP4 containers seem to strike a very
good size performance balance. So I modified a copy of vid2mkv to use ffmpeg
to create this kind of files instead.
To speed up the processing of multiple files, this script runs the
In November my four-year old laptop started acting up. First it shut itself
down a couple of times when doing heavy calculations. Later the screen started
showing artefacts in text mode and would hang the X server. I bought this
BTO because they offered quite a lot of ...