@Peter Matulis Your workaround doesn't work on Lubuntu 11.10 Entries from /usr/share/thumbnailers seem to have no effect on pcmanfm as I also have evince.thumbnailer entry there but no thumbnails for pdfs are generated.
$ apt-cache policy pcmanfm ffmpegthumbnailer ffmpegthumbnailer: Installed: 2.0.6-4ubuntu1 Candidate: 2.0.6-4ubuntu1 Version table: *** 2.0.6-4ubuntu1 0 500 http://ftp.vectranet.pl/ubuntu/ oneiric/universe amd64 Packages 100 /var/lib/dpkg/status pcmanfm: Installed: 0.9.9-0ubuntu1 Candidate: 0.9.9-0ubuntu1 Version table: *** 0.9.9-0ubuntu1 0 500 http://ftp.vectranet.pl/ubuntu/ oneiric/universe amd64 Packages 100 /var/lib/dpkg/status -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1064089 Title: Thumbnails for video files missing To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pcmanfm/+bug/1064089/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs