Steps
- Open Google Flow AI.
- Click on New Project.
- Upload your 3 character images as the replacement images.
- Add the reference video that you want to recreate.
- Paste the provided character-replacement prompt into the prompt box.
- Make sure the images are assigned in the correct order:
- Character 1 → Replacement Character Image 1
- Character 2 → Replacement Character Image 2
- Character 3 → Replacement Character Image 3
- Click Generate.
- Review the generated video and make sure the three characters maintain their correct identities, positions, movements, and appearance throughout the video.
Prompt
Use the provided reference video as the exact visual, motion, timing, and composition reference.
Recreate the video as closely and accurately as possible to the original video. There are three original characters in the reference video. Replace all three original characters with the three provided replacement character images, respectively.
Only the three characters should be replaced. Everything else must remain exactly the same as the reference video.
CHARACTER REPLACEMENT
- There are exactly 3 characters in the original video.
- Replace Character 1 with Replacement Character Image 1.
- Replace Character 2 with Replacement Character Image 2.
- Replace Character 3 with Replacement Character Image 3.
- Maintain the correct identity of each replacement character throughout the entire video.
- Never swap or mix the three characters.
- Preserve each replacement character’s exact facial features, hairstyle, skin tone, clothing, accessories, body proportions, colors, and overall appearance from their provided images.
- Do not redesign, beautify, modify, or stylize the characters.
- Keep the same character size, position, orientation, perspective, and framing as the corresponding original character.
MOVEMENT & ACTION
Copy the exact movements and actions of all three original characters.
Preserve:
- Body movements
- Hand gestures
- Head movements
- Facial expressions
- Walking/running movements
- Character interactions
- Looking directions
- Positions relative to each other
- Timing of every action
- Entry and exit movements
Each replacement character must perform the same actions as the original character they replace.
CAMERA
Keep the reference video’s camera work completely unchanged:
- Same camera angle
- Same camera position
- Same lens perspective
- Same framing
- Same zoom
- Same camera movement
- Same tracking
- Same focus changes
- Same depth of field
- Same shot transitions
- Same duration and pacing
ENVIRONMENT
Do NOT change the original environment.
Keep exactly the same:
- Background
- Location
- Architecture
- Scenery
- Props
- Objects
- Foreground elements
- Background elements
- Object positions
- Perspective
- Depth
No new objects or environmental elements should be added.
LIGHTING & VISUAL QUALITY
Match the original video’s lighting exactly.
Preserve:
- Light direction
- Light intensity
- Shadows
- Highlights
- Reflections
- Exposure
- Contrast
- Color temperature
- Atmosphere
- Depth
- Texture
- Overall visual quality
The three replacement characters must naturally blend into the original scene and receive the same lighting and shadows as the original characters.
COMPOSITION
The final video must maintain the exact same composition as the reference video.
Do not change:
- Character placement
- Character spacing
- Camera composition
- Background composition
- Perspective
- Aspect ratio
