4 seconds out
Fixed. Three seconds fails at the provider and every extra second is another 6 credits.
Upload a clip and one clear portrait. The face is replaced and the performance, framing, background and timing stay where they were. Read the limits before you start: 4 seconds out, 480p, clips up to 15 seconds in, and it costs credits from the first run — there is no free swap on this page.
Sign up and get 20 free credits — about 1 video
Use only faces you own or have permission to use. Everyone shown on this page is an AI-generated character.
Our own run, at this page’s own tier. The smile arrives at the same moment it does in the source clip.
Upload the clip and one front-on portrait of the face you want in it. The model re-renders the clip with that face on the person, keeping their movement, their clothes and the background. You get 4 seconds at 480p in about two minutes, and each run costs 24 credits — new accounts start with 20, so the first swap needs a small top-up.
Read this before spending anything.
Fixed. Three seconds fails at the provider and every extra second is another 6 credits.
The model’s own ceiling on a reference clip. A longer file is refused before you are charged.
One clearly visible face in the clip, and a front-on portrait going in. Profiles do not carry a likeness.
A swap costs 24 credits; signup gives 20. Every other tool page has a free tier — this one does not.
Up to 15 seconds, MP4, MOV or WebM. One clearly visible face, looking towards the camera.
One front-on portrait, evenly lit. Distinctive detail is what carries the likeness across.
About two minutes for a 4-second result at 480p. You can leave the page and come back.
One real run on this page’s own tier: a 4-second talking-head clip, static camera, one subject.
| What we checked | Result | What we measured |
|---|---|---|
| The performance | Survives — this is the strong side | Neutral at 0.2s, a small smile at 1.4s, wider at 2.6s and 3.8s. The result follows the same arc at the same timestamps |
| The likeness | Carries across | Recognisably the person from the portrait — jawline and eye shape both came through |
| Camera and background | Held | The window, the street bokeh, the warm light and the depth of field are all where they were |
| Clothing | Partly rewritten | A cream cable-knit came back with cable-knit sleeves and a navy chest. This is the main defect, and it is why the page says "reface", not "edit" |
| Hair | Comes with the new face | Same behaviour as the image tool — it replaces the head, not the features |
| The file itself | Re-rendered, not patched | 97 frames in, 129 out (24 → 31fps), and the dimensions shift slightly. It is a new clip, not your clip with edits |
It is the first thing everybody asks — the searches around this tool are full of "30 seconds", "60 seconds", "10 minutes" and "unlimited" — so here is the honest answer before you upload anything.
You can bring a clip up to 15 seconds. What you get back is 4 seconds. Those are two different limits and both are real: 15 is the model’s ceiling on a reference clip, and 4 is the output length, fixed because three seconds fails at the provider and every second past four costs another six credits. If the free tools promising 30 seconds unlimited are what you want, they are a click away and we are not going to pretend to match them.
What this page is for is the case where four seconds is the whole job: a reaction shot, a single line of dialogue, a loop for a card or a message, a test of whether an idea reads at all before you commit to shooting it. For anything longer, or for higher quality, the Video surface has the full model range and no 4-second cap — that is the paid route and it is a different tool, not a bigger button.
A clip of someone’s face is personal. What happens to it here:
Picking a file only previews it on your device. Not one byte is stored until you sign in and click generate.
Uploads land in your private library, never a public gallery, and re-running the same clip stores nothing new.
Remove uploads and results from your library whenever you want.
Credits work across every tool — upscaling, image editing and the video models.
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The Video surface has the full model range — longer clips, higher resolution and native audio — without this page’s 4-second cap.
No. A run costs 24 credits and a new account gets 20 on signup, so the first swap needs a small top-up. We would rather say that here than after you have uploaded a clip. The image face swap on the other page does have five free runs, because a photo costs four credits instead of twenty-four.
Up to 15 seconds in. The result is 4 seconds at 480p. A longer file is refused in the browser before anything is charged.
Not on this page — 4 seconds is the output length and each run is billed. For longer clips and stronger models, use the Video surface.
The movement, framing, background and timing come back intact — in our test the smile landed on the same frames as the source. The clothing is where it slips: a cream cable-knit came back with a navy chest. And the hair arrives with the new face, because the model replaces the head rather than the features.
No. The output is a silent 4-second clip — the run is a re-render, not an edit of your file, so nothing from the original track is carried over.
One at a time, and a crowded frame is the wrong input for this tool: with several faces in shot the model re-composes the picture. Bring a clip with one clearly visible subject.
480p. It is the tier this page runs at deliberately — at 720p the same 4 seconds costs more than double, which for a page with no free run is a worse first experience, not a better one.
Your own, or someone else’s with their permission. Do not use a public figure’s face, and do not make a clip that puts a real person in a situation that never happened or implies an endorsement they did not give.
The clip is generated frame by frame rather than patched, which is also why the performance survives. You can leave the page — the run is remembered and picked back up when you return.