i've already tried troubleshooting this in Kubuntu forums. But it didn't get me far.
i have this situaiton.
the following ffmpeg thigs are installed: http://ubuntuone.com/2VQfvqngtq778qwgWiITER
every time i try to render in mpeg 4 or other formats i get the same error. it keeps saying usupported codec, yet the codec is installed i've added medibuntu repository and even a newer version of kdenlive via PPA.
i've also added: libavcodec53, libmp3lame, h264enc, libx264-120
i've deleted the config files restarted the aplication so it reconfigured...but nothing helped. codec is still unsuported.
as a bonus kdenlive forced itself as default applicaiton to open movies and such (though this might be distributions fault).
can anyone help me with this? I would really like to glue some movies of my son together and preferably add a few text "effects" to it.