Making your own video allows you to be creative, adding touches like a soundtrack, special effects, titles and credits, and even different backgrounds from images or pictures you already have on your computer. If you have a PC running Windows, it likely came installed with Movie Maker, while Mac users will be able to find the program iMovie on their computers. Both programs have a slightly different process when it comes to adding backgrounds to your video.
Open Movie Maker under "Programs" on your PC, then open your video.
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Click "Import Media" and click the image you want to use as your background, followed by "Import." Click on the thumbnail of your image in the timeline.
Click "Titles and Credits" in the pane on the left and click "On the Selected Clip." Enter the text you want, which will appear with your image as a background.
Open iMovie in "Finder" and open your video.
Click the iPhoto tab and drag a photo up to your video timeline to use as a background, or click "Import" and "Import Pictures" in the toolbar if the image is not located in your iPhoto library.
Click the "T" tab ("text") and find a template for titles, captions or credits. Drag the template up to the image in the timeline and enter the text. The image will appear as the background.