Playing .3gp and .mp4 files on Ubunut

I know, I know, I've been posting lots of how-tos but that's basically for me to find them and share a method that works with others.

The codec works for mplayer (not totem) so you need mplayer, and, if you want, gnome-mplayer so run the following command:

sudo apt-get install gnome-mplayer

It'll pull some dependencies, including mplayer itself.

Then you need to go here and download the tarball for your architecture.

It has a README file, just follow the instructions there, copy the files and your videos should play.

Source