Original on the left, Hermoso's version on the right. Tap the speaker for sound. Doing the rap one? See Hotel Lobby AI.
Two ways to swap a person in a video
Keep the scene, swap who's in it
This is the one most people mean by "replace person in video AI". The camera, the set, the light, the timing and the sound stay exactly as they were, and only the person changes: face, hair, build and clothes, all taken from your photo. It handles up to 4 people at once, each tied to their place in the frame, and runs on clips up to 60 seconds. Over MCP it is recast_hook.
Re-perform the moves somewhere new (AI motion transfer)
Here your character does the original's moves, camera and timing, but in the setting from their own photo. A dance filmed in a car park becomes your character dancing in a kitchen or on a stage. The original sound is kept. This is the better pick for an AI dance swap where you also want a new place. Over MCP it is recast_motion.
How to replace a person in a video with AI
- Paste a post link from TikTok, Instagram, Facebook or X, or upload the video.
- Add a photo of who goes in, or pick an AI creator you've saved. For a group, say who goes where.
- Check the price, run it, then post or schedule the result from the same place.
Swap anything, not only people
The same swap works on objects. Put your product where someone else's was, like the soda can that replaces the juice bottle above, and the hand that picks it up still picks it up. You can also change the location or the outfits in the same request: a photo of a place or a few words moves the scene, and an outfit photo or a description re-dresses each person. Want to keep the person and change the whole look instead? Restyle the video into claymation, anime or 31 other looks.
Tips for a clean AI video swap
- Use a sharp, front-facing photo with the face well lit. One or two more angles of the same person help it hold up when they turn.
- For a dance swap, use a full-body photo, so the outfit and build come through.
- For motion transfer, the background of your photo becomes the new set, so pick a photo taken where you want the video to happen.
- Close and medium shots hold a face better than wide ones.
- Several people? Give each one a position: left, right, center, or your own words like "the one in the red jacket".
Whose face can you use?
Your own, an AI person, or someone who agreed to it. Using a photo of a real person, your own face included, needs a paid plan, so we can verify who is using it, and sending it confirms you are that person or have their consent. AI-generated faces and AI creators you have saved work on every plan. The people in our examples above are AI-generated.
Works in the web studio, or from ChatGPT, Claude or Cursor through the Hermoso MCP, as part of Hermoso running your marketing on autopilot.
Frequently asked questions
Can I swap a person in a video with AI for free?
Hermoso has a free plan with no card and 250+ free credits you can earn, and swaps with AI people work on it. Using a photo of a real person, including yourself, needs a paid plan. The exact price shows before anything renders.
What is the difference between a face swap and a person swap?
A face swap only changes the face. A person swap replaces the whole person, face, hair, build and clothes, while the moves, the camera and the sound stay the same.
Does the swapped video keep the original audio?
Yes. Both the swap and motion transfer keep the original sound, and the new person moves in time with it.
How long can the video be?
A swap that keeps the scene works on up to 60 seconds. Motion transfer with a person runs up to 30 seconds.
Can I swap more than one person?
Yes, up to 4 in one go. Give each person a position so the right face lands in the right spot.
Can I do it from ChatGPT or Claude?
Yes. Connect the Hermoso MCP and ask with the video link and your photos. The same assistant can post or schedule the result.
Related
Doing the rap trend? See Hotel Lobby AI. Keeping the people and changing the look? Restyle any video, or go straight to video to anime or video to claymation.
To remake a whole ad for your brand from its link, see clone a video ad.
Start free, 250+ earnable free credits, no card. The exact price shows before anything renders.
Start free → See pricing