Installing the KDEnlive Audio / Video Editing Software
KDEnlive is an audio / video editor that is much more sophisticated than Kino. It is well suited for editing both audio and video tracks (-both separately or in unison), adding custom transitions and special effects. It's functions are mainly controlled through drag and drop operations, making it more intuitive to use than comparable offerings - such as Cinelerra.
As it's name suggests, the KDEnlive user interface uses the KDE libraries rather than those of Gnome. If you default to using Gnome as your GUI, this is not a problem: all it means is that the KDE libraries will need to be installed (-normally the Software Centre will take care of this if they are not) -and the look and feel is a little different from Gnome.
[KDEnlive] is well suited for editing both audio and video tracks, .. adding custom transitions and special effects
For those people not used to editing video, then Kino is a good place to start; once you have mastered the techniques and are ready for something more complex, then you can move on to something more complex.
If you are using Fedora 15, you can find KDEnlive in it's Software Centre:

If you require more information on KDEnlive, you can click on the Homepage link in the bottom right hand pane of the Software Centre to browse the project website:

When you are happy to continue, just tick the checkbox next to the KDEnlive entry in the top right hand pane of the Software Centre, then click the "Apply" button. The installation will begin - and you will be asked to enter the Administrator password before you can continue. With the admin password entered, the installation will begin:

When the installation completes, a dialogue box will display showing you what was installed - and giving you an opportunity to run KDEnlive or just close the dialogue:

Note: if you cannot locate KDEnlive in the software centre (-e.g. if you are running Fedora 16) you can find it by adding the RPMfusion repository - just go to the RPM Fusion site and click on the "RPM Fusion Free for Fedora 14,15 and 16" link
If you are using Ubuntu or another linux Distro - and you can't find KDEnlive in your Software Centre, then you can download a pre-compiled package from the KDEnlive Homepage and clicking on the "Download" link:

Note: if there is no package listed for your distro, then you can download the source code and compile it using the instructions, but this is probably only viable for experienced Linux users
Once the package has been downloaded, simply double-click it and opt to open it with your Software Centre to begin the install.
In the 0.8.1 version of KDEnlive, a change in one of the dependant libraries (MLT) can cause the following message to display when KDEnlive is run:
Fatal Error
MLT's SDL module not found. Please check your MLT install. Kdenlive will not work until this issue is fixed.
For example:

Until the KDEnlive team fix the issue, the easiest way to fix this issue, is to downgrade the MLT package from version 0.7.4-1 back to to the previous version (0.7.0-2). In Fedora, you can do this by dropping to the command line and typing:
sudo yum downgrade mlt
For example:
$ sudo yum downgrade mlt
Loaded plugins: langpacks, presto, refresh-packagekit
Setting up Downgrade Process
Resolving Dependencies
--> Running transaction check
---> Package mlt.i686 0:0.7.0-2.fc15 will be a downgrade
---> Package mlt.i686 0:0.7.4-1.fc15 will be erased
--> Finished Dependency Resolution
Dependencies Resolved
================================================================================
Package Arch Version Repository Size
================================================================================
Downgrading:
mlt i686 0.7.0-2.fc15 rpmfusion-free 2.1 M
Transaction Summary
================================================================================
Downgrade 1 Package(s)
Total download size: 2.1 M
Is this ok [y/N]: y
Downloading Packages:
Setting up and reading Presto delta metadata
Processing delta metadata
Package(s) data still to download: 2.1 M
mlt-0.7.0-2.fc15.i686.rpm | 2.1 MB 00:02
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : mlt-0.7.0-2.fc15.i686 1/2
Cleanup : mlt-0.7.4-1.fc15.i686 2/2
Removed:
mlt.i686 0:0.7.4-1.fc15
Installed:
mlt.i686 0:0.7.0-2.fc15
Complete!
$
KDEnlive should then start up successfully.
You may also see a message in the Config Wizard stating that the Xine library is not installed. This is only an informational message (-unless you need to use it's conversion or playback functionality, that is), but it can be fixed by installing the Xine media player using your Software Centre or the command line. For example, on Fedora this can be done using:
sudo yum install xine
For example:
$ sudo yum install xine
Loaded plugins: langpacks, presto, refresh-packagekit
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package xine-ui.i686 0:0.99.6-26.fc15 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
================================================================================
Package Arch Version Repository Size
================================================================================
Installing:
xine-ui i686 0.99.6-26.fc15 fedora 858 k
Transaction Summary
================================================================================
Install 1 Package(s)
Total download size: 858 k
Installed size: 2.3 M
Is this ok [y/N]: y
Downloading Packages:
Setting up and reading Presto delta metadata
Processing delta metadata
Package(s) data still to download: 858 k
xine-ui-0.99.6-26.fc15.i686.rpm | 858 kB 00:02
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : xine-ui-0.99.6-26.fc15.i686 1/1
Installed:
xine-ui.i686 0:0.99.6-26.fc15
Complete!
$