K3b transcodes

Hi, I am running Ubuntu 12.10 64bit and would like to know were I can find transcodes for K3b, I would like to rip DVD's to my hard drive using K3b but when I attempt to do so I get a dialog box saying that K3b uses transcodes to rip DVD's ensure that they are installed. Can anyone out there help me please.

Not a direct answer to your

Not a direct answer to your question, but have you look at e.g. "Top 5 Linux DVD RIP Software" at http://www.cyberciti.biz/tips/linux-dvd-ripper-software.html