This article assumes that you have already selected a template or created a custom video design and that you are in the video edit screen.
To change the video background:
1) Tap the '+' button in the middle of the edit screen and tap 'backgrounds'.
2) Select 'change' to change the background or 'edit' to edit the colors of the current background.
3) If you tap 'change', you will be shown a list of possible animated backgrounds to choose from. Tap on the background you want for your design and it will replace your current background.
4) Please note that a background cannot be moved like other elements. It automatically resizes according to your video size.