I created a short screen cast showing the integration of Nepomuk in Dolphin.
The video shows how Nepomuk works inside of KDE 4’s Dolphin: rating, commenting and tagging are shown with short examples.
Some words about this video:
It is taken with gtk-recordMyDesktop, the conversion was done with these parameters:
mencoder video.ogg -ovc lavc -oac mp3lame -o video.avi
It is a shame that neither dailymotion nor youtube can handle ogg theora. Hey, even iRiver and iAudio-devices can handle that video format… I would switch if there is a Theora capable service out there which is also supported by WordPress.com. I would also upload the file somewhere in the original quality, but I have now reliable space available atm.
Anyway, as already mentioned in the video the desktop shown is KDE 3, only Dolphin itself is KDE 4. Also, the style is standard Plastik – Oxygen is already available in SVN and was shown in other screen casts around, but I will leave it to the developers or a “Road” article to really introduce Oxygen.
Last but not least: This is my first video screen cast so I appreciate any helpful/constructive feedback.
/home/liquidat 
hi,
i really liked your screencast. i find it great that you mention so many things about kde4. i love to read it.
btw: you are from germany aren’t you?
Regarding questions about me please have a look at the (just updated) “About me” section at the about page.
That’s nice.
Just a couple of questions though –
1. are the tags limited? or can we customise this feature?
2. are the tags embedded in the file? for example: like an ID3 tag for mp3s
Very cool. Nice screencast that speaks volumes.
MadGenius:
1. The tags are not limited in number or value: you can create as many tags as you want afaik, and you can name them as you wish.
2. No, the tags are not embedded in the file usually. In case of files which do support tags natively, like mp3 files this might be different, but generally they are not embedded because that would mean changing the file type, which would result in incompatibility.
You might also want to read “More about Nepomuk” regarding that topic.
Roy: Thanks for the feedback 🙂
The video does not work for me! It hangs after cca. 15 seconds. Am I the only one?
And one question about the tags: are they stored in UTF-8 by default?
omichalek: I have issues here as well atm., I hope they will be fixed soon.
Hello,
it sure looks very nice and handy with Nepomuk integrated in Dolphin and KDE. And the little animations was pretty cool.
I just can’t see any goals of nepomik. Why to use it? How could it help me in everyday work? Why should I write comments for files? The only reason for me is to rate photos and pictures, videos and music, but there are already rating in mp3 files, rating in digiKam, etc.
I think “semantic” desktop should be a different thing. For example if I whant to play music, my desktop, taskbar and the whole interface changes to listen music. Or if I choose the “work mode”, I wish to see my work grafic on a desktop and a list of current projects and tools. So I wish to have operation system with hidden applications so that I just listen, and just work, but don’t “start amarok and find there my composition” and not open my work folder and choose some files to be edited. I think in next ten years operation systems will come to this, but why not now?
proX, if you have no use for these mentioned functions it is ok – but others might have.
For me the tagging support can become extremely useful once I got used to it, and the comment support might help as well at some certain occasions.
About the described desktop: this has nothing to do with semantic but with session management. And the KDE team aims at such a solution – however, due to the huge amount of work which has to be done to reach such an aim it is more likely to see this in KDE 5. But the basics will be available in KDE 4 already. D-Bus will play an important rule there, for example.
This might seem an unfortunate time to suggest this, but wouldn’t you agree that the Reiser4 filesystem would seem to be ideally suited to the implementation of this sort of functionality?
With Reiser4 plugins the tags, ratings, etc. could be associated with all files at the directory level. This might dramatically simplify moving files without losing the associated meta-information.
This assumes that my limited information is correct and that the Reiser4 filesystem is largely concerned with the fast, efficient implementation of a filesytem integrating metadata and database features.
Ross, meta information are supported not only by ReiserFS but also by many other file systems (XFS for example), therefore I don’t see the benefit using ReiserFS.
Besides, the data have to be stored in an additional database anyway because one of the main tasks of the data is to search them.