Archive for October, 2007

HowTo get ColorZilla Eyedropper working on Ubuntu Feisty

If you want to use ColorZilla on Ubuntu Feisty it may not work out of the box. So here is a little tutorial to get it running. (I am using Firefox on Ubuntu Feisty) -> Should be upgraded to now 🙂

Now the Eyedropper-Tool should work. I waited a long time for such a tool =)

EDIT: Seems that other extensions are too affected such as greasemonkey or firebug. An alternative would be to install firefox the normal way and do not use the ubuntu-firefox version but I heard there are some problems with sound and flash… You can download the current one here: libxpcom* for Firefox ColorZilla (VS von, VS

HowTo convert ogg to avi with mencoder

If I screencast something, than most of the time I do it with recordMyDesktop which produces .ogg-Videos. If you need to convert it so you can show it to your friend or upload it to a video hosting page like youtube or so you have to convert it into another format. I chose avi as format.

Simply fire up this command to convert your file:

mencoder out.ogg -o out.avi -oac mp3lame -ovc lavc

  • out.ogg is the .ogg-file you want to convert
  • out.avi is the .avi-file you want to create
  • mp3lame is the used audio-codec (here mp3)
  • lavc is the used video-codec (here libavcodec)

For more information you can look at the MPlayer manual page.

Create thumbnails giving attention to the orientation

There is now phatch. Use the really nice tool to create thumbnails and other batch processes instead! You can install it with
sudo apt-get install phatch

Every now and then I need to get thumbnails of my pictures. I found some solutions, that create thumbnails, but none of them gave attention to the orientation of the image. So if I wanted to resize the images to 640×480 than the landscape pictures had a correct resolution of 640x480px but the portrait pictures had something like 640×850 or even 640×480 (deforming the picture to landscape). So I wrote a script to do this job for me.


You need to install imagemagick to get the script working. (sudo apt-get install imagemagick).

I installed the script as nautilus-script.

  1. Download the thumbnail-script and modify the script to your needs (See more at the bottom)
  2. Create the folder “~/.gnome2/nautilus-scripts/” and copy the script into this folder named create_tn
  3. Make it executable
    (chmod a+x ~/.gnome2/nautilus-scripts/create_tn)
  4. Restart nautilus per killall nautilus
  5. Now you can start the script by going into the folder where your original images are and right click anywhere in the white area or on a file and select Scripts -> create_tn.

Now the script creates thumbnails of all the images of your current directory and places it into the subfolder thumbnails.

Modify the script to your needs

  • Change the resolution of the thumbnails: Change the variables long and short in line 4 and 5. eg. use long=”1024″ and short=”768″ if you want a landscape resolution of 1024×768 and portrait resolution of 768×1024.
  • Ask every time for a resolution: If you want every time another resolution just uncomment the lines 11-14. Now you can enter every time you start the script a resolution like 800×600 or 1024×768 so width x height without spaces.
  • Use a better quality: The script uses a quality of 80% for image resizing. If you need a better one you can change it in line 34 by modifying the number after “-quality”. So you can replace 80 by 60, 100 or every other integer number you want.


If the Download from Rapidshare does not work you can copy and save the source:

# Define a fixed resolution
## Enter a resolution every time
## Uncomment the next lines if you want to enter the resolution
## each time manually
#resolution=`zenity –entry –text=”Resolution: (eg. 1024×768)”`
#posx=`expr index $resolution x`
# Filecount for progressbar
filecount=`find -maxdepth 1 -iname “*.jpg” | wc -l`
let “inc=100/$filecount”
mkdir -p thumbnails
# Creating thumbnails
(for i in *.jpg *.JPG; do
echo “$progress”;
echo “# Resizing $i”;
width=`identify -format %w $i`
height=`identify -format %h $i`
if [ $width ge $height ]; then
convert resize $size quality 80 $i thumbnails/$i
let “progress+=$inc”
) | zenity progress title “$Creating thumbnails…” percentage=0