[Solved] Thunar video thumbnails

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http://crunchbanglinux.org – Sigh. Stater r20111125 32-bit. So I've installed thunar-thumbnailers. And ffmpegthumbnailer. Thunar is not showing thumbnails for video files (flv, mp4, mov, 3g). I restarted the machine. Still no thumbnails. This applies to files on an external USB HDD. I copied one of the files to /tmp to check, but no thumbnail is shown even for a video file in /tmp. VLC is installed by default and can play the files. Ideas please?Edit: Double-clicked an flv file to view it in VLC and then closed VLC. Now THAT file has a thumbnail in Thunar. Repeated with 3g file -- now it has a thumbnail. Did NOT work (HowTos)