How to swap a whole body in a video with AI (body swap vs face swap)
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An AI body swap replaces the whole person in a 4–180 second video — face, hair, build and outfit — with the person or character in one photo, while the moves and the camera stay as filmed. On LazyKiwi it runs in Character Swap for 3, 4 or 6 credits per second at 480p, 720p or 1080p: a 10-second 720p body swap is 40 credits. A face swap, by contrast, changes only the face.
Specifications
| Input | 1 video + 1 full-body photo of the person or character (or one of 6 preset characters) |
|---|---|
| Length | 4–180 seconds |
| Resolution | 480p, 720p (default), 1080p |
| File formats | Video: MP4, MOV, WebM or another browser-playable format · Image: JPG, PNG, WebP, HEIC · Up to 50 MB per file |
| Credits | 3 / 4 / 6 credits per second at 480p / 720p / 1080p |
| Free allowance | 40 free credits cover about 13 seconds at 480p or 10 seconds at 720p |
| Watermark | None on paid plans (listed on the pricing page); Free plan: To be confirmed |
How to use it
- 1
Open Character Swap
Video Generator → Tools → Character Swap, or open it directly. Body swap is the Replace person mode.
- 2
Upload the video
A clip of 4–180 seconds. LazyKiwi finds every person in it; this costs nothing.
- 3
Pick who is swapped
Click the person whose body should change. Everyone else stays as filmed.
- 4
Add one full-body photo
The body you want in the clip — head to toe, facing the camera, on a plain background. Use only photos you have the rights to.
- 5
Choose resolution and generate
480p, 720p or 1080p. The button shows the price for your clip length.
Body swap vs face swap
| Body swap (Character Swap) | Face swap | |
|---|---|---|
| What changes | Face, hair, build and outfit | The face only |
| What stays | Pose, moves, timing, camera, background | Body, hair, clothes, everything else |
| Input | 1 clip + 1 full-body photo | 1 clip + 1 face photo per face |
| Price | 3 / 4 / 6 credits per second | 3 credits per second |
| Use it for | Mascots, costumes, a whole new person | Putting a face on the same body |
Face swap details: Video and GIF face swap.
What it costs
| Clip | 480p | 720p | 1080p |
|---|---|---|---|
| 5 s | 15 | 20 | 30 |
| 10 s | 30 | 40 | 60 |
| 30 s | 90 | 120 | 180 |
For the best body swap
- Match the framing: a head-to-toe photo for a full-body clip, a waist-up photo for a talking shot.
- One clearly visible person, not too small in frame, who is not hidden for long stretches.
- Loose costumes, armour and mascots work; the body is redrawn to follow the original pose.
- To swap two people, run the result again and pick the second person.
Common messages
- “Select a person to continue.” — click one of the detected people first.
- “Could not detect people.” — try a clip where the person is larger and clearly visible.
- “Could not replace that person.” — the generation failed and its credits are returned; try another photo or clip.
FAQ
Is a body swap the same as Character Swap?
Yes. Body swap is Character Swap's Replace person mode: the whole person is replaced from one photo.
Can I swap my body into a dance video?
Yes. Upload the dance clip, add a full-body photo of yourself and pick the dancer. The moves and timing stay as filmed.
Does a body swap keep the original moves and expressions?
Yes. Pose, every move, the timing and the camera come from your clip; only the person changes.
Can I use someone else's photo?
Only with the rights to the image and the person's consent; impersonating real people is not allowed (Terms of Use, Section 7).