Reference & editing prompt tool

AI Video Background Replacement Prompt Generator

State the new environment clearly and protect the subject silhouette, motion and scale.

Generated prompt

Fill in the form and generate your prompt.
This tool prepares model-specific prompts for current AI video generators. It does not render video and does not require paid generation APIs.
Use-case playbook

How to build this type of AI video prompt

State the new environment clearly and protect the subject silhouette, motion and scale.

  • State which visual properties are locked before describing what changes.
  • Separate subject motion, camera motion and environment changes into distinct instructions.
  • End with a stable final state so the output is easier to edit or continue.