I recently upgraded KDE 4.9.2. Since after the upgrade Dolphin can no more thumbnail the videos. I checked the preview section in settings but it has no options for video thumbs. Screenshot: http://i.imgur.com/01fDb.png.

I tried installing ffmpegthumbnailer, but it said I already have the latest version. Console log: https://www.refheap.com/paste/5580.

Then I tried installing kdemultimedia4-thumbnailers but it appears it does not work with the new KDE release. Console log: https://www.refheap.com/paste/5581.

That's the only two thumbnailers I know of, and they do not work.

Here is my Dolphin screenshot, for the sake of completeness: http://i.imgur.com/kq45A.png

How do I get the video thumbing capability back?

(Note: I have also posted this problem to https://bugs.kde.org/show_bug.cgi?id=308005 but they suggested I post it here.)