Como Convertir videos en Ubuntu 10.10

How do I use software from a PPA?

To start installing and using software from a Personal Package Archive, you first need to tell Ubuntu where to find the PPA.
Step 1: Open a terminal and enter:

sudo add-apt-repository ppa:paul-climbing/ppa

Your system will now fetch the PPA's key. This enables your Ubuntu system to verify that the packages in the PPA have not been interfered with since they were built.
Step 2: Now, as a one-off, you should tell your system to pull down the latest list of software from each archive it knows about, including the PPA you just added:

sudo apt-get update

Now you're ready to start installing software from the PPA!
Step 3: You can now install WinFF directly by running:

sudo apt-get install winff

Step 4 (optional): Install the unstripped version of ffmpeg:

sudo apt-get install libavcodec-extra-53

Pasos de Instalacion

http://code.google.com/p/winff/wiki/UbuntuInstallation 

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