Minimax H3 Recast

It performs a substitution rather than generating video from scratch: the portraits you supply replace the performers already in your clip, while movement, framing, cut points and audio are all inherited from the original file.

Between 5 and 30 seconds in total, and no single shot longer than 15 seconds. Split longer material before you upload, because the output returns at exactly the duration you submitted.

Up to four, and each one needs a separate portrait. Default behaviour maps them onto the leads in the order they appear on screen, so sort your uploads accordingly — or override the mapping with a written prompt.

One sharp, evenly lit, front-facing portrait per person. Half-body shots carry hairstyle and clothing across more faithfully than a tight head crop, and you should avoid sunglasses, hats, covered faces, group photos, heavy filters or blur.

Both, in that order. Confirm the pairing on a cheap low-resolution render, then commit to the 1080p master. Since cost follows clip length, the first pass is the affordable way to catch a mismatch.

It cannot change the footage itself — different movement, different camera work or a different location all have to come from your source. Results also weaken with dense crowds, distant or tiny faces, fast motion, and objects crossing the face after a hard cut; across long takes, or when someone turns to profile, the likeness may drift back toward the original performer.