I confirm this annoying regression. I can only read mp4 and other formats with VLC.
I'm using Ubuntu 11.04 (Natty Narwhal). -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to totem in Ubuntu. https://bugs.launchpad.net/bugs/833507 Title: Nautilus doesn't show thumbnail preview for mp4 video icons Status in “totem” package in Ubuntu: Confirmed Bug description: Nautilus does not show a thumbnail preview as the icon for mp4 videos. Instead it shows a generic icon of a "film strip." A snapshot of the video should be displayed as the icon. ProblemType: Bug DistroRelease: Ubuntu 11.04 Package: nautilus 1:2.32.2.1-0ubuntu13 ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2 Uname: Linux 2.6.38-8-generic x86_64 Architecture: amd64 Date: Wed Aug 24 23:54:41 2011 ExecutablePath: /usr/bin/nautilus LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) ProcEnviron: LANGUAGE=en_US:en LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: nautilus UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/totem/+bug/833507/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp