Use the source image as the setting reference
Background drift often begins when a prompt describes a story instead of a short motion. A clear source frame already contains the location, objects, light, and composition. Preserve those details first, then add a small movement that can happen within the existing scene.
Write a fixed-setting prompt
State the background limits before the action. Be specific about what already exists in the image, but keep the movement instruction short. One direct exclusion list helps prevent an unintended new location from becoming part of the clip.
Build the result in four checks
- Choose a readable scene. Use a source image where the setting is visible enough to recognize after motion begins.
- Lock the viewpoint. Keep the camera and crop fixed before testing any foreground action.
- Add one local movement. Make the action occur inside the current frame, such as a curtain, cloud, reflection, or breath.
- Remove story words first. If the setting changes, cut words that imply travel, discovery, transformation, or a new time.
Fix common background changes
Let atmosphere move without moving the setting
A stable background does not have to look frozen. Small environmental movement can make a scene feel alive while protecting its location and composition. Test that restrained version before adding a second action or a more stylized treatment.
Open the Photo2Reel tool