First, remove the existing background

1. Select the layer: Choose the script track or visual layer with the background you want to remove. You can do this from the timeline, the scene editor, or the Layers list in the Properties panel.
2. Enable Green Screen or Chroma Key: In the scene editor hover menu, select Effects.
   • Click the + Add Effect button, then click Green Screen from the available options in the list.
   • If you're using an actual green screen, the Chroma Key effect may give you better results.
3. Success! Once toggled on, your background will be removed. You can toggle the Green Screen or Chroma Key effect on or off at any time in your composition.

Then, add a new background image to the scene editor

Upload a custom image or use one of Descript's stock media library backgrounds or images. Add the layer to the scene editor using drag-and-drop or the Insert new layer button.

Reorder your layers

If needed, move the speaker layer in front of the background image. You can do this by adjusting the layer order in the Properties panel’s Layer list—just click and drag. Or, right-click a layer in the timeline and choose an option from the layer order menu. Learn more about layer visibility and order.