kffmpegthumbnailer is not working and does not appear in the list under General->Previews. There is no option to thumbnail videos, thus I have no video thumbnails. Image thumbnails work. Was working in KDE 5.3 but not after upgrade to 5.4 from kubuntu-ci weekly unstable. Dolphin version 15.08.0. Reproducible: Always Steps to Reproduce: 1. Make sure kffmpegthumbnailer is installed 2. Try to enable via Control -> Configure Dolphin -> General -> Previews, you will see no option for video 3. In dolphin, open a folder that contains videos 4. Click preview button if not already enabled 5. You should see icons rather than thumbnails of all videos Actual Results: No video thumbnails, just icons. Expected Results: Should see video thumbnails, similar to image thumbnails. I also have mplayerthumbs and it's not showing up either.
*** This bug has been marked as a duplicate of bug 351894 ***