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Minimax H3 Recast
Minimax H3 Recast puts different faces on footage that is already cut: your portraits take the roles while the timing, framing and sound are left alone.
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Built for One Job: Replacing the On-Screen Cast
Rather than generating new footage, Minimax H3 Recast works on top of what you already shot — the people change, and the rest of the clip is left as it is.
- Casting changes on locked footageFeed it an edited clip and a set of portraits. The tool drops those faces into the existing scenes instead of building a new video from scratch.
- The same face across every cutMatch your uploads to the order people appear on screen, and each newcomer stays attached to the same role even when the edit jumps between angles.
- The performance comes from your clipGlances, pauses, lighting and camera movement are all inherited from the source; what arrives from your side is the face and, where visible, the outfit.
Running a Cast Swap in Three Steps
Load the clip, supply a portrait for each role, and let Minimax H3 Recast handle the substitution.
Core Strengths of Minimax H3 Recast
A closer look at what the tool does well — and why the original performance, edit and sound design survive a full cast change.
Four roles, mapped left to right
You can bring in as many as four new faces; each is pinned to a lead according to your upload order and stays with that role across the whole sequence.
Written prompts can re-cast the order
If the default left-to-right assignment is wrong, type an instruction and the tool will bind a different portrait to a different performer.
Acting is inherited, faces are not
No part of the performance is re-created — head turns, timing, expression, light and lens movement belong to your source, while identity and clothing are carried in by the references.
Edit rhythm and soundtrack survive
Splices, transitions and the underlying audio are preserved exactly, so the deliverable reads as your original cut with different people in it.
Cheap preview, full-quality finish
Validate the swap with a low-res render first, then spend on the 1080p version; cost scales with how long your clip runs.
Hairstyle and clothing travel with the photo
The more your reference shows, the more it carries over: a half-body shot reproduces hair and outfit far better than a tight crop of the head.
Minimax H3 Recast: Common Questions
Straight answers on limits, photo requirements and where Minimax H3 Recast stops working.
What exactly does Minimax H3 Recast do?
It is a substitution tool rather than a generator. The portraits you supply take over the roles of the people already on screen, and every other element — motion, framing, edit points, audio — is inherited from your source file.
Is there a length limit on the source clip?
Yes: keep the whole file between 5 and 30 seconds, and no single shot longer than 15 seconds. Longer takes should be split before you upload, since the render returns at the same duration you submitted.
How many performers can I replace at once?
Up to four, each with a portrait of their own. By default the tool matches them to the leads in screen order, so arrange uploads to match the footage — or write a prompt to change the pairing.
Which photos give the cleanest result?
One sharp, evenly lit, front-facing image per person. Half-body framing reproduces hair and clothing better than a close head crop. Avoid sunglasses, hats, covered faces, group photos, heavy filters and anything blurry.
Do I need to render at 1080p?
Start at 768p to confirm the faces land correctly, then render the 1080p version for delivery. Since cost follows clip length, the preview pass is the cheap way to catch a mismatch.
When is this the wrong tool?
Whenever the footage itself must change — new blocking, new camera work, a new location — because all of that comes from your source. Quality also drops with crowds, distant or tiny faces, fast motion, and anything covering the face after a hard cut; across long takes or profile turns the likeness can drift back toward the original actor.
Run a Cast Swap with Minimax H3 Recast
Bring an edited, scored clip and a handful of portraits. The people change, while the timing, framing and sound stay exactly as you shot them.