Hi,
I have been using new Ubuntu 13.04. After this update from the internet most of the codec and decoder cannot work with the KDENLIVE.
How?
Thanks

Did you update the codecs and mlt as well? Which repository do you use for updating kdenlive, mlt and codecs? ubuntu standard repos do not support a wide range of codecs, but there is a repo that does - unfortunately I am on archlinux and do not know the "other" ubuntu repos.