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face swap minimax h3
face swap MiniMax H3 swaps the cast of a finished clip from up to four photos, while the edit, camera movement and soundtrack play on as recorded.
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Why Use MiniMax H3 Recast
A recast keeps the take you already shot and only changes the cast. The footage decides the acting and the runtime; your photos decide who appears on screen.
- Cast Up to Four People, Left to RightSupply one clear photo per new person, up to four. They take over the main people from left to right in every shot they appear in, so photo order has to match on-screen positions.
- Performance and Camera Work Carry OverYou animate nothing new — the existing footage does the acting. Gestures, beats, facial expressions, scene light and the way the lens travels all stay put; only faces, and the wardrobe when your photo shows it, come from your uploads.
- Cheap 768p Test Before the 1080p RenderA short 768p pass confirms casting and identity before you commit to a 1080p final, and cost follows the length of the clip rather than a fixed fee.
How MiniMax H3 Recast Works
Three moves — load the clip, line up the photos, then test and render. The recast keeps the source length and sound.
What MiniMax H3 Recast Is Good At
Think of it as a casting desk for footage that already works. Instead of asking for a fresh render, you keep the take as shot and decide which performer's face sits inside it.
Prompt Override for Cast Mapping
A short optional prompt overrides the default left-to-right assignment — for example, telling the tool that the woman on the right becomes person 1.
Identity Tracked Across Cuts
Replaced faces hold through the edit, because identity is followed across cuts in every shot that person appears in.
Edit Rhythm and Soundtrack Intact
Original cut points and audio come through unchanged, so a recast drops into the finished clip instead of rebuilding it from scratch.
Output Length Matches the Source
The recast keeps the length of the source video, so there is no re-timing or re-editing, and cost scales with clip duration.
What Makes a Good Reference Photo
One sharp, front-facing, evenly lit photo per person; a half-body shot carries hair and clothing better than a tight headshot, while sunglasses, hats, covered faces, group shots and heavily filtered portraits weaken results.
Known Limits: Crowds, Small Faces, Fast Action
Busy crowds, small or distant faces, fast action and occlusion after hard cuts are weak spots, and identity can drift back toward the original actor in long shots or profile turns.
MiniMax H3 Recast — FAQ
Common questions about recasting existing footage with MiniMax H3 Recast.
What does MiniMax H3 Recast actually do?
It swaps the cast of footage you already have: your reference photos take the place of the people on screen, while motion, camera behaviour, edit points and audio stay as recorded. Nothing is generated from scratch.
How long can my source video be?
Any clip from five seconds up to thirty. Individual shots must stay under fifteen seconds, so cut longer takes apart before uploading; the result is the same length as what you sent.
How many people can I recast, and in what order?
Four at most, with a single photo per person. The default reading is left to right, matching the main figures on screen; a brief prompt lets you reassign them if that order is wrong.
What kind of reference photos work best?
Go for a crisp, well-lit portrait where the person faces the camera, framed around the torso rather than the head alone so hair and clothes are visible. Skip anything with shades, headwear, a hand across the face, several people in one frame, or heavy filters and low resolution.
Should I test at 768p or go straight to 1080p?
Run the low-resolution pass first to see whether the right face landed on the right person, then output at full 1080p. Because pricing tracks runtime, a wrong photo caught early costs very little.
When should I not use it?
Not the right pick if you want brand-new movement, different camera angles or another location — the uploaded clip decides those. It also falters on packed scenes, faces that are tiny or far away, and rapid motion or objects crossing the face right after a cut.
Try face swap MiniMax H3 on Fuser
Take a finished take and change the cast, not the craft: your edit points, camera movement and audio survive the swap untouched.