I want to create the kind of animation found in the link I posted at the bottom of this post but can't seem to figure out how, or if it's possible.
The animation was made in flash, and I want to preserve the quality of it by building it into kdenlive rather than trying to convert it to a video file and use the green screen effect on it.

The basics of the animation are as follows:
The black bar slides in at high speed and at an angle, the moves slowly for a short time, then speeds off of the screen at the original pace.
The text does the same thing along the same path, but starting at the other side.

http://www.filedropper.com/comradetao

Just a blind shot, no kdenlive available right now.

1. Create three png pictures - one with the black box, one with the text and one with the background (background in size of project profile, box and text with transparent background).
2. Place the text in track 1, the box in track 2, the background in track 3, adjust length.
3. Add a Composite transition to track 1, set target from "auto" to track 3, adjust length to the clips.
4. Add a Composite transition to track 2, leave target at "auto" or set to track 3, adjust length.
5. Add pan, scan, zoom effect both to track 1 and track 2.
6. By using keyframes animate the two pictures as needed.

Good luck.

Fullack to what capslock said. A slight variant is to use Affine transitions instead of composite. This way, you dont need zoom and pan effects, as the Affine transition has it built in. And it is keyframable, too. It is still amazing to me how many effects you can create from simple elements and without having to resort to big irons, such as blender or other animation tools. But maybe I'm just too boring because I prefer simpler style over fancy stuff.

Thanks. That affine effect works perfectly. It took me a few tries to get it right, but it gets the job done.