1. Drag a media clip to the editing track, and then click Modify.

2. Click the Chroma Key option, select the Enable chroma key option, and then click on the dropper button.

3. When the mouse cursor becomes an eye dropper, use it to select the background color you want to get rid of.

4. Use the sliders to set Tolerance of intensity and Tolerance of hue.

5. Click Save to make the background invisible.

 

Extra Information: Making the background transparent lets you view parts of both media clips at the same time.