Archive for the ‘OpenSource’ Category

darktable – photography workflow application

February 28th, 2011 No comments

i just stumbled over this nice and free application.

a virtual lighttable and darkroom for photographers: it manages your digital negatives in a database and lets you view them through a zoomable lighttable. it also enables you to develop raw images and enhance them.

this project tries to fill the gap between the many excellent existing free raw converters and image management tools (such as e.g. ufraw, rawstudio, f-spot, digikam, shotwell). The user interface is built around efficient caching of image metadata and mipmaps, all stored in a database. the main focus is on user interaction, both in terms of a smooth interface design as well as processing speed. high quality output is also one of our goals.

all editing is fully non-destructive and only operates on cached image buffers for display. the full image is only converted during export. raw image loading is done using libraw and rawspeed, high-dynamic range, and standard image formats such as jpeg are also supported. the core operates completely on floating point values, so darktable can not only be used for photography but also for scientifically acquired images or output of renderers (high dynamic range).

it is amazingly fast compared to other equivalent (but costly) tools like adobe lightroom, apple aperture or bibble labs.

it also has plugins that enhance the funcionality a lot. in my opinion it’s functionally equal to the highcost payware.

try it out!

mythtv userjob handbrake transcode / convert to x264

September 8th, 2010 2 comments

Endlich hab ich eine Möglichkeit gefunden meine über DVB-T mit MythTV aufgenommenen Sendungen automatisch nach x264 zu konvertieren. Die Filme haben danach nur noch ein Drittel der ursprünglichen Dateigröße. Das Script stammt im Original von Defcronyke Webmaster. Ich habe lediglich ein paar Zeilen auf meine Bedürfnisse geändert und benutze zur Konvertierung nicht den mencoder, sondern das HandBrakeCLI da ich mit der Originalversion des Scripts Probleme mit deutschen Umlauten hatte. Lest euch erstmal die Originalquelle des Scripts durch und schaut euch dann meine Version an. Dort wird auch erklärt wie man es in mythtv einbaut. Die Kommentare im Script sind größtenteils aus der Originalversion und in Englisch.

Benötigte Software:

  • MythTV (doh!)
  • HandBrakCLI

WICHTIG: Benutzung auf eigene Gefahr. Ich übernehme keine Garantie für die Funktionalität oder irgendwelche Schäden die bei der Benutzung des Scripts entstehen.


# mythtv multi-pass auto-transcode to x264 with HandBrakeCLI, remove commercials, and delete original recording bash script
# This Script is copyright © 2010 Defcronyke Webmaster, The Eternal Void Network. 

# variables
# $1 must be the directory/file to be transcoded. (in mythtv enter: "%DIR%/%FILE%")
# $2 must be the output directory / file name. The directory must be writeable by the mythtv user (in mythtv enter: "/path/to/output-dir/%TITLE% - %PROGSTARTISO%.mkv")
# $3 must be chanid (in mythtv enter: "%CHANID%")
# $4 must be starttime. (in mythtv enter: "%STARTTIME%")
# full userjob command should look like this: /path/to/this-script/ "%DIR%/%FILE%" "/path/to/output-dir/%TITLE% - %PROGSTARTISO%.mp4" "%CHANID%" "%STARTTIME%"

# a temporary working directory (must be writable by mythtv user)

# MySQL database login information (for mythconverg database)

# MythTV Install Prefix (make sure this matches with the directory where MythTV is installed)

# go to correct working dir

# remove commercials
$INSTALLPREFIX/mythcommflag -c "$3" -s "$4" --gencutlist
$INSTALLPREFIX/mythtranscode --chanid "$3" --starttime "$4" --mpeg2 --honorcutlist
$INSTALLPREFIX/mythcommflag --file "$1" --rebuild

# handbrake converting
HandBrakeCLI -e x264  -b 1000 -a 1 -E faac -B 128 -R 44.1 -6 dpl2 -f mp4 --crop 0:0:0:0 -d fast -p -m -2 -T -x ref=2:bframes=2:me=umh -i "$1" -o "$2"

# uncomment the following 6 lines to delete the original recorded show, associated picture files, and remove entry from database (make sure everything else works properly before trying this)
#rm $1
#rm $1.100x75.png
#rm $1.85x64.png
#rm $1.png
#echo "DELETE FROM recorded WHERE chanid='$3' AND starttime='$4';" > remove-original-recording.sql
#mysql --user=$DATABASEUSER --password=$DATABASEPASSWORD mythconverg < remove-original-recording.sql

intervalltimer diy tutorial

September 4th, 2010 5 comments

Dieser intervalltimer für Canon, Nikon und Pentax Kameras stammt von Achim Sack ( und wurde von ihm unter cc-lizenz auf seiner website veröffentlicht.

Ich habe lediglich das Layout in eine für mich lötbare Version transferiert 😉

Benötigte Bauteile:

  • 1x TANTAL 22/16 (= Tantal-Kondensator, Rm 2,5, 22µF/16V)
  • 2x SB 130 (=Schottky Diode, DO41, 30V, 1A )
  • 1x PIC 10F222-I/P (=10f222 als Dip8)

Hier gibt es das Platinenlayout (600dpi) und den Bestückungsplan für die DIP8 Version:

Hier der mega-professionelle Bestückungsplan (eeek!):

Tip und Ringbelegung ist hierbei beliebig. Details dazu gibt es auf

Den Assembler-Code für den PIC gibt es auch bei zum Download.

Hier noch ein paar Bilder. Einmal mit Gehäuse und einmal in Schrumpfschlauch eingeschweißt.

dslr intervalometer

July 26th, 2010 No comments

i stumbled upon this nice tutorial:

it shows you how to build a tiny and cheap intervalometer for your dslr-camera. really tiny. i never build something so small before. but i will definetly try it out. the materials cost only 87cents!

update: here is another one with more features.

RawTherapee – a free raw picture editor/converter

April 29th, 2010 No comments


a few days ago i found this very nice raw-picture editor and converter. its pretty close to what you can do with the commercial variants like adobe lightroom, apple aperture or bibblepro.
the nice thing with this piece of software is that it also supports linux systems. which from the commercial ones only bibblepro does. thumbs up! dope stuff.
you can find out more here:
AND DONT FORGET to donate the author a bit.

compile dcraw raw image converter under debian lenny to support canon eos 7d .cr2-files

April 20th, 2010 No comments

after a long search i finally found a method to compile dcraw under debian so that it can handle the raw files of my canon eos 7d.

just do the following:
download the c-source from
open a terminal and navigate to the folder you downloaded the c-source.
then install two libraries needed for compiling dcraw

apt-get install libjpeg62-dev

apt-get install liblcms1-dev

after that compile dcraw with the following command

gcc -O3 -o dcraw dcraw.c -lm -ljpeg -llcms

then copy the compiled version of the program (dcraw not dcraw.c) to your /usr/bin

now you are set.
navigate to a folder with raw pics and just type

dcraw *

now it will batch convert all the containing raw files

i found this info here:

jetzt aber sicher

November 14th, 2008 No comments

ich habe es endlich geschafft HTTPS für mehrere domains an den start zu bringen.

sehr geholfen hat mir dabei dieses kleine script hier zum erstellen der subjectaltnames.

Categories: compjutah, OpenSource, security Tags:

Free your iPod with ROCKBOX

April 12th, 2007 No comments

This is a very nice software written in linux for iPods.

It’s a parallel install. Which means you can use your existing Library and the original iPod software parallel to Rockbox.

It’s themeable and has some nice features that the original iPod software doesn’t have. You can nearly customize everything and even build your own themes. The coolest thing in my opinion is that i’m not restricted to iTunes anymore to sync it. I just have to drop those mp3s in my Music folder on the iPod and i’m done. This i can do on ANY system (Mac, PC, Linux). YES ! so cool !!!

The only thing that lacks compared to the original iPod software is video playback which plays only mpgs very stuttered. But if you need video u can use the default iPod software. Maybe it gets better in some of the next versions. There are daily builds and an active community.

check it out at

My iPod now looks like this:

tabbed terminal for all os’s

February 8th, 2007 No comments

i searched for a tabbed terminal app recently.

and found this:

its javabased and very nice. love it !

synergy – many pcs/os’s – one keyboard/mouse

November 1st, 2006 No comments

great tool to use multiple pcs with different os’s with just one keyboard and mouse.
if u have a lot of macs around you check teleport

Categories: compjutah, freeware, OpenSource, Software Tags: