Here are a few ways to install the latest development version of Kdenlive without compiling from source.
If you are using an Ubuntu based distribution, you can use Sunab's experimental repository.
It is updated every 2-3 days and contains the latest git versions of MLT and Kdenlive.
First, install apt-purge so that you can easily remove these experimental packages and revert to the release repository:
sudo apt-get install ppa-purge
Then add sunab's experimental PPA:
sudo add-apt-repository ppa:sunab/kdenlive-svn && sudo apt-get update && sudo apt-get install kdenlive
This will install the latest packages. If you later want to revert to your previous install, do the following:
sudo ppa-purge ppa:sunab/kdenlive-svn
It will remove all trace from this experimental PPA.
The build script will download and compile for you the latest versions of lame, libvpx, libx264, FFmpeg, Frei0r, MLT and Kdenlive. It will then install all of this in a user folder, without touching your system libraries. The script takes quite a while to complete, but it is a risk free way to test the latest Kdenlive version.
Instructions and build script can be found on MLT's website, click on "Show Kdenlive" to see the details.
Dan Dennedy provides automatic daily builds that contain the latest git versions of Kdenlive, MLT, Frei0r, FFmpeg and some other important libraries.
You can test this packages without changing your system. Just download the package and extract it to a folder of your choice.
Inside that folder is a "start-kdenlive" executable that will start for you the latest Kdenlive.
Daily builds are currently provided for Ubuntu (should be compatible with OpenSuse 12 and Debian 7) and Fedora.
Download from here: