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Alchemy
Source
Motion reference videoThe motion & camera work to copy
Add images

Who should perform that motion

Describe the result (optional)

Our AI turns this into the right prompt automatically — type in any language, or leave it blank.

Settings
5s
2s30s

About this tool

Alchemy: replace the person or product in any video

Alchemy takes a video you like and puts your own subject in it. Upload the clip and an image of your person, product or outfit, and SWAI swaps it in while keeping the original motion, camera moves and timing. Turn a trending video into your ad without reshooting it, with several subjects at once if needed.

What you can do

  • Swap people

    Put yourself or your presenter into any scene.

  • Swap products

    Replace a bottle, phone or bag with your own product.

  • Same motion

    Movement, camera and rhythm stay identical to the source.

  • Multiple subjects

    Replace more than one element in the same clip.

How it works

  1. 1Upload the source video.
  2. 2Add an image of what should appear in it.
  3. 3Generate and download your version.

Frequently asked questions

What is Alchemy good for?

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Recreating trending videos with your product or presenter, and testing ad variations without new shoots.

Does the motion stay the same?

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Yes, the original movement and camera work are kept.

Can I swap several things?

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Yes, several subjects can be replaced in one clip.

More SWAI tools

  • AI Motion Control
  • Edit Video with AI
  • AI Lip Sync
  • AI Video Generator