Batch convert Images on Windows and Linux

I encountered a common problem when preparing images for the web (e.g. this blog), from screenshots or from renders. These are usually available as .tiff or .pnm formats or have been processed with GIMP resulting in .xcf file. Converting these to .pngs or jpegs with GIMP or some viewer software makes it a click intensive task. There are a plenty of applications with GUIs for this task. These are however bloated with functions one normally does not need. There is a faster way to do this with a simple batch script. Continue reading Batch convert Images on Windows and Linux

Compression Basics under Linux

Compressing files and folders on linux is not always an easy task. This is mainly due to the lack and impracticability of compressing GUI tools under linux.
Basicly the most easy way is to use gnuzip (gz) in conjuncion with tar. This can be done either in 2 steps (first create a tar container and then gzip this container) or directly using the corresponding switches from tar

Another option would be Continue reading Compression Basics under Linux

fstab mount by UUID

I recently ran across a bug when installing Fedora 20. The installer crashed when trying to probe mdraid. This also happened when I (completely) disconnected the array from the computer. The problem was, that the installer was probing the /etc/fstab in the old fedora installation I wanted to overwrite. Here the raid array was mounted as

This is however now anyway deprecated Continue reading fstab mount by UUID

html5video – html5 video support for Gallery3

I recently wrote about some Gallery3 modules that I find useful. One Idea that came up to my mind was to implement html5 video in Galley 3. So I did that. The result is not that spectacular, but can be found and downloaded from GitHub. The big advantage compared to other video.js or flash based solutions is a better support for mobile devices.

The installation is simple, just copy the module to the modules folder of your Gallery3 installation and enable it in the Admin/Modules panel.

You can see the result for example in my Gallery, e.g. in the Grass rendering video page. A precondition is of course your browser supports the video tag.

A screenshot form my Gallery page.
A screenshot form my Gallery page.