It’s at least the third time I try to find a solution for the unavailable codecs proclem during rendering video project in Kdenlive. This time, I’ll write it down and link to this great site to make sure I’ll be able to easily find it next time ;-)
The process is quite simple (I’m using Ubuntu 10.10 x86) – just install all the codecs in their full versions:
sudo apt-get install libavcodec-unstripped-52 libavdevice-unstripped-52 libavformat-unstripped-52 libpostproc-unstripped-51 libswscale-unstripped-0
and execute the KDEnlive wizard (Settings menu).
For other good pieces of advice, take a look at the KDEnlive site.