When I try to render project in H.264 codec, Kdenlive informs that "video codec libx264 is not supported".
Kdenlive is version 0.8.2.1 and platform 4.6.5. MLT is 0.7.6.
Ubuntu 11.04 (Natty).
I also used "sudo apt-get install libavcodec-extra-52 libavdevice-extra-52 libavfilter-extra-1 libavformat-extra-52 libavutil-extra-50 libpostproc-extra-51 libswscale-extra-0" what was a succesfull command in version 0.8 to get x264 codec to work out.
How can I get x264 supported?

Yes! That solve the problem. (There really wass treads with same issue but I was too afraid to do someting that kind with the terminal.)
I have installed Kdenlive several times in three computers, but this was first time when this kind of matter happened. Annoying issue even it's so easy to solve. (if you now what to do ;-) )
Thanks a lot yellow.