Date: 2009sep30 OS: Linux Distro: RedHat/Fedora/CentOS Q. How can I play Quicktime movies with Totem on Fedora? I get this error message:

The playback of this movie requires the following decoders which are not installed: MPEG-4 AAC decoder MPEG-4 Video decoder

A. You have Totem installed but for people who don't the command is:

dnf install totem

Next, make sure you have the livna repository activated:

rpm -Uvh http://rpm.livna.org/livna-release.rpm http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-stable.noarch.rpm http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-stable.noarch.rpm

Make sure the atrpms repository is activated. In file /etc/yum.repos.d/atrpms.repo place:

[atrpms] name=Fedora Core $releasever - $basearch - ATrpms baseurl=http://dl.atrpms.net/f$releasever-$basearch/atrpms/stable gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms gpgcheck=1

Then install these packages:

dnf install libquicktime faac libfaad2 gst-ffmpeg gstreamer-plugins-base gstreamer-plugins-flumpegdemux gstreamer-plugins-good gstreamer-plugins-schroedinger gstreamer-plugins-bad gstreamer-plugins-bad-extras gstreamer-plugins-farsight gstreamer-plugins-ugly

Perhaps they aren't all necessary but this did the trick for me. I was interesting in using Totem (which uses Gstreamer) to play Quicktime. If you want to use mplayer there are different codecs you can use.