H3 Max Recast: 1-4 person photos, 768p default, 1080p opt-in

h3-max-recast replaces the primary people in one source video with the people in 1-4 reference photos. Send one photo for each new person. The output is 768p by default, and 1080p is opt-in. The source video must be 5-30 seconds, with no single shot longer than 15 seconds.

Limits

The limits come from the Video Router catalog row.

What stays the same

The output keeps the source motion, camera, cuts and sound. You are changing who is in the shot, not how it moves. Recast is selected only explicitly: sume/auto never routes to it.

Price

The list rate is $0.30 per second at 768p and $0.45 at 1080p (fal 2026-10-01). Times 1.25 that is $0.375 and $0.5625 per second. A 10 s source at 768p is 10 x $0.375 = $3.75, and at 1080p 10 x $0.5625 = $5.625 before cent rounding. A 30 s source at 768p is $11.25.

Example

Request on the Video Router. video_url is accepted only by this row, higgsfield-genjutsu and gemini-omni-flash-1.1.

{
  "model": "h3-max-recast",
  "video_url": "https://example.com/source-12s.mp4",
  "reference_image_urls": [
    "https://example.com/person-a.jpg",
    "https://example.com/person-b.jpg"
  ],
  "resolution": "768p"
}