# MiniMax H3 Max recast

Needs video url and reference image urls. Served by fal.ai.

H3 Max Recast, served by fal.ai. H3 Max Recast replaces the main people in a source video with people from reference photos, tracking each person across shots. Price: Your request will cost $0.30 per second of output video at 768p or $0.45 per second at 1080p. Reference images are included at no additional charge. Actual-cost billing: the initial reservation is an estimate, not a maximum. 5 seconds at 1080p ($0.45/s); reference images included. The unique Billing Events receipt for this exact endpoint and request_id is the final USD charge, including usage above the estimate. Missing receipts retain the reservation for reconciliation; no guessed final fee. Asynchronous: returns a request_id; poll fal/status and fetch fal/result with model "minimax/h3-max" and that request_id. Billed once, when the result is ready; a generation that fails is refunded.

- Tool ID: `fal/minimax-h3-max-recast`
- Name in the catalog: H3 Max Recast
- Provider: [fal.ai](/providers/fal.md)
- Capability: [MiniMax Hailuo](/tools/video-generation/minimax.md)
- Price: usage based, the maximum is shown before a run
- Authentication: an authorised Agentik workspace is required for execution, including zero-price tools.

## Pricing contract

Billed at the exact provider cost, without a per-call cap. The initial reservation is an estimate; additional usage is debited and unused funds are refunded.


```json
{
  "model": "reported",
  "costPath": "cost_usd",
  "requireCost": true,
  "costMode": "actual",
  "reservationBasis": "5 seconds at 1080p ($0.45/s); reference images included.",
  "maxUsdDefault": 2.25,
  "maxUsdCap": 2.25
}
```

Pricing source: [https://fal.ai/models/minimax/h3-max/recast](https://fal.ai/models/minimax/h3-max/recast). Your request will cost $0.30 per second of output video at 768p or $0.45 per second at 1080p. Reference images are included at no additional charge. Actual-cost billing: the initial reservation is an estimate, not a maximum. 5 seconds at 1080p ($0.45/s); reference images included. The unique Billing Events receipt for this exact endpoint and request_id is the final USD charge, including usage above the estimate. Missing receipts retain the reservation for reconciliation; no guessed final fee..

Price verification date: 2026-10-07.

## Complete input schema


```json
{
  "type": "object",
  "properties": {
    "reference_image_urls": {
      "type": "array",
      "maxItems": 4,
      "title": "Reference Image URLs",
      "description": "One photo per new person. By default they replace the main people in the video from left to right, each in every shot they appear in.",
      "minItems": 1,
      "items": {
        "type": "string"
      }
    },
    "seed": {
      "title": "Seed",
      "description": "Random seed. Leave empty for a random one.",
      "anyOf": [
        {
          "type": "integer",
          "minimum": 0
        },
        {
          "type": "null"
        }
      ]
    },
    "resolution": {
      "type": "string",
      "title": "Resolution",
      "enum": [
        "768P",
        "1080P"
      ],
      "default": "1080P"
    },
    "enhance_realism": {
      "type": "boolean",
      "title": "Enhance Realism",
      "description": "More natural skin textures and better blending of the new people into the scene. Off unless set.",
      "default": false
    },
    "prompt": {
      "title": "Prompt",
      "description": "Optional: who becomes whom, or what else to keep or change.",
      "anyOf": [
        {
          "type": "string",
          "maxLength": 2000
        },
        {
          "type": "null"
        }
      ]
    },
    "video_url": {
      "type": "string",
      "description": "The source video, 5 to 30 seconds long, with no single shot longer than 15 seconds.",
      "title": "Video URL"
    }
  },
  "required": [
    "video_url",
    "reference_image_urls"
  ],
  "additionalProperties": false
}
```

## Published example

This is the provider tool’s published example. Replace example values with the user’s requested inputs, respecting the schema; do not execute an example merely to test a connection.


```json
{
  "tool_id": "fal/minimax-h3-max-recast",
  "input": {
    "video_url": "https://v3b.fal.media/files/b/0aac8cc6/lOHY4Mitfg5x1UDerR3RB_dw9Hs7ChHU-Fqwzz0W9cq_video.mp4",
    "reference_image_urls": [
      "https://v3b.fal.media/files/b/0aac8d26/HVno2j68vj7tkAwGo3Qii_Nolan%203.jpg"
    ]
  }
}
```

## Execute and retrieve

Inspect again before execution, explain the price and obtain the required authority. Use MCP run_tool or POST /v1/run with this tool ID, valid input and an idempotency key. Save the returned run ID and follow the actual state. If Agentik answers that the tool is temporarily unavailable, do not retry it blindly; use discovery to propose an alternative.

This tool uses deferred settlement. Follow its returned task/run instructions; preserve the existing reservation until the result is reconciled.

A partial or uncertain result can still have consumed provider resources. Consult [billing](/docs/billing.md), [idempotency](/docs/idempotency.md) and [asynchronous results](/docs/async.md).

[Provider documentation](https://fal.ai/models/minimax/h3-max/recast)

[REST inspection](https://api.agentik.cc/v1/tools/fal/minimax-h3-max-recast) · [OpenAPI](/openapi.json) · [Connection guide](/connect.md)

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[HTML page](/providers/fal/minimax-h3-max-recast) · [Agent index](/llms.txt)