Svetoslav Marinov’s Blog

In a perfect world you'd execute "yum install ffmpeg" and yum will install the dependencies but sometimes it does not work without some extra effort.

Solution
Adding an additional yum repository.

Login as root

[code]
rpm --import http://ATrpms.net/RPM-GPG-KEY.atrpms
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[code]
# vi /etc/yum.repos.d/atrpms.repo
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Paste the contents

[code]
[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
[/code]

Execute the install command again

[code]
yum install ffmpeg
[/code]

Related:
http://atrpms.net/install.html

Voila.
Do let me know if that quick tip has saved you several hours