# Seedance 2.5 reference images and audio to video

Takes generate audio, codec, draft and more, all optional. Served by fal.ai.

Seedance 2.5 (ByteDance), reference images and audio to video, served by fal.ai. The OpenAPI schema for the bytedance/seedance-2.5/reference-to-video queue. Price: $0.0214 per 1,000 tokens at 480p and 720p, $0.0234 at 1080p (about $0.22, $0.47 and $1.16 per second of video); with reference videos fal also counts their length (at most 30.2 s combined) and applies 0.6x, so the reservation covers 0.6 x (30.2 s + duration); metered by fal after the call (x-fal-billable-units) and billed at that reading; the reservation is the per-second bound for the duration, resolution and reference videos asked and the difference is refunded. Asynchronous: returns a request_id; poll fal/status and fetch fal/result with model "bytedance/seedance-2.5" and that request_id. Billed once, when the result is ready; a generation that fails is refunded. Set draft=true for a 480p preview: estimated reservation $1.10, actual receipt billing without a per-call cap. Complete the returned draft_id within seven days in this workspace.

- Tool ID: `fal/seedance-2-5-reference-to-video`
- Name in the catalog: Seedance 2.5 (ByteDance), reference images and audio to video
- Provider: [fal.ai](/providers/fal.md)
- Capability: [Seedance](/tools/video-generation/seedance.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

The provider’s price, with no markup. Billed for measured usage.


```json
{
  "model": "per_unit",
  "amountUsd": 0.473,
  "unitsField": "duration",
  "unitsDefault": 5,
  "maxUnits": 30,
  "multipliers": [
    {
      "all": [
        {
          "field": "resolution",
          "equals": "480p"
        },
        {
          "field": "aspect_ratio",
          "equals": "21:9"
        }
      ],
      "setUsd": 0.2879
    },
    {
      "all": [
        {
          "field": "resolution",
          "equals": "480p"
        },
        {
          "field": "aspect_ratio",
          "equals": "16:9"
        }
      ],
      "setUsd": 0.2195
    },
    {
      "all": [
        {
          "field": "resolution",
          "equals": "480p"
        },
        {
          "field": "aspect_ratio",
          "equals": "4:3"
        }
      ],
      "setUsd": 0.1645
    },
    {
      "all": [
        {
          "field": "resolution",
          "equals": "480p"
        },
        {
          "field": "aspect_ratio",
          "equals": "1:1"
        }
      ],
      "setUsd": 0.1234
    },
    {
      "all": [
        {
          "field": "resolution",
          "equals": "480p"
        },
        {
          "field": "aspect_ratio",
          "equals": "3:4"
        }
      ],
      "setUsd": 0.0926
    },
    {
      "all": [
        {
          "field": "resolution",
          "equals": "480p"
        },
        {
          "field": "aspect_ratio",
          "equals": "9:16"
        }
      ],
      "setUsd": 0.0695
    },
    {
      "all": [
        {
          "field": "resolution",
          "equals": "480p"
        },
        {
          "field": "aspect_ratio",
          "equals": "auto"
        }
      ],
      "setUsd": 0.2879
    },
    {
      "all": [
        {
          "field": "resolution",
          "equals": "720p"
        },
        {
          "field": "aspect_ratio",
          "equals": "21:9"
        }
      ],
      "setUsd": 0.6067
    },
    {
      "all": [
        {
          "field": "resolution",
          "equals": "720p"
        },
        {
          "field": "aspect_ratio",
          "equals": "16:9"
        }
      ],
      "setUsd": 0.4623
    },
    {
      "all": [
        {
          "field": "resolution",
          "equals": "720p"
        },
        {
          "field": "aspect_ratio",
          "equals": "4:3"
        }
      ],
      "setUsd": 0.3467
    },
    {
      "all": [
        {
          "field": "resolution",
          "equals": "720p"
        },
        {
          "field": "aspect_ratio",
          "equals": "1:1"
        }
      ],
      "setUsd": 0.2601
    },
    {
      "all": [
        {
          "field": "resolution",
          "equals": "720p"
        },
        {
          "field": "aspect_ratio",
          "equals": "3:4"
        }
      ],
      "setUsd": 0.1951
    },
    {
      "all": [
        {
          "field": "resolution",
          "equals": "720p"
        },
        {
          "field": "aspect_ratio",
          "equals": "9:16"
        }
      ],
      "setUsd": 0.1463
    },
    {
      "all": [
        {
          "field": "resolution",
          "equals": "720p"
        },
        {
          "field": "aspect_ratio",
          "equals": "auto"
        }
      ],
      "setUsd": 0.6067
    },
    {
      "all": [
        {
          "field": "resolution",
          "equals": "1080p"
        },
        {
          "field": "aspect_ratio",
          "equals": "21:9"
        }
      ],
      "setUsd": 1.4927
    },
    {
      "all": [
        {
          "field": "resolution",
          "equals": "1080p"
        },
        {
          "field": "aspect_ratio",
          "equals": "16:9"
        }
      ],
      "setUsd": 1.1373
    },
    {
      "all": [
        {
          "field": "resolution",
          "equals": "1080p"
        },
        {
          "field": "aspect_ratio",
          "equals": "4:3"
        }
      ],
      "setUsd": 0.853
    },
    {
      "all": [
        {
          "field": "resolution",
          "equals": "1080p"
        },
        {
          "field": "aspect_ratio",
          "equals": "1:1"
        }
      ],
      "setUsd": 0.6397
    },
    {
      "all": [
        {
          "field": "resolution",
          "equals": "1080p"
        },
        {
          "field": "aspect_ratio",
          "equals": "3:4"
        }
      ],
      "setUsd": 0.4798
    },
    {
      "all": [
        {
          "field": "resolution",
          "equals": "1080p"
        },
        {
          "field": "aspect_ratio",
          "equals": "9:16"
        }
      ],
      "setUsd": 0.3602
    },
    {
      "all": [
        {
          "field": "resolution",
          "equals": "1080p"
        },
        {
          "field": "aspect_ratio",
          "equals": "auto"
        }
      ],
      "setUsd": 1.4927
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "4"
        }
      ],
      "factor": 5.13
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "5"
        }
      ],
      "factor": 4.224
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "6"
        }
      ],
      "factor": 3.6201
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "7"
        }
      ],
      "factor": 3.1886
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "8"
        }
      ],
      "factor": 2.8651
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "9"
        }
      ],
      "factor": 2.6134
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "10"
        }
      ],
      "factor": 2.412
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "11"
        }
      ],
      "factor": 2.2473
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "12"
        }
      ],
      "factor": 2.11
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "13"
        }
      ],
      "factor": 1.9939
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "14"
        }
      ],
      "factor": 1.8943
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "15"
        }
      ],
      "factor": 1.808
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "16"
        }
      ],
      "factor": 1.7325
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "17"
        }
      ],
      "factor": 1.6659
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "18"
        }
      ],
      "factor": 1.6067
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "19"
        }
      ],
      "factor": 1.5537
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "20"
        }
      ],
      "factor": 1.506
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "21"
        }
      ],
      "factor": 1.4629
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "22"
        }
      ],
      "factor": 1.4237
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "23"
        }
      ],
      "factor": 1.3879
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "24"
        }
      ],
      "factor": 1.3551
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "25"
        }
      ],
      "factor": 1.3248
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "26"
        }
      ],
      "factor": 1.297
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "27"
        }
      ],
      "factor": 1.2712
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "28"
        }
      ],
      "factor": 1.2472
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "29"
        }
      ],
      "factor": 1.2249
    },
    {
      "all": [
        {
          "field": "video_urls",
          "minLength": 1
        },
        {
          "field": "duration",
          "equals": "30"
        }
      ],
      "factor": 1.204
    }
  ],
  "unitsHeader": "x-fal-billable-units",
  "fractional": true,
  "unitsHeaderUsd": 0.0214,
  "unitsHeaderRules": [
    {
      "when": {
        "field": "resolution",
        "equals": "1080p"
      },
      "setUsd": 0.0234
    }
  ]
}
```

### Action-specific pricing


```json
[
  {
    "field": "draft",
    "equals": true,
    "pricing": {
      "model": "reported",
      "costPath": "cost_usd",
      "requireCost": true,
      "costMode": "actual",
      "reservationBasis": "Estimated 5-second 480p preview, approximately $0.22/s from the published Seedance token tariff; actual draft dimensions, duration and references affect usage. Drafts expire after seven days.",
      "maxUsdDefault": 1.1,
      "maxUsdCap": 1.1
    }
  }
]
```

Pricing source: [https://fal.ai/models/bytedance/seedance-2.5/reference-to-video](https://fal.ai/models/bytedance/seedance-2.5/reference-to-video). $0.0214 per 1,000 tokens at 480p and 720p, $0.0234 at 1080p (about $0.22, $0.47 and $1.16 per second of video); with reference videos fal also counts their length (at most 30.2 s combined) and applies 0.6x, so the reservation covers 0.6 x (30.2 s + duration); metered by fal after the call (x-fal-billable-units) and billed at that reading; the reservation is the per-second bound for the duration, resolution and reference videos asked and the difference is refunded..

Price verification date: 2026-10-08.

## Complete input schema


```json
{
  "type": "object",
  "properties": {
    "generate_audio": {
      "description": "Whether to generate synchronized audio for the video, including sound effects, ambient sounds, and lip-synced speech. The cost of video generation is the same regardless of whether audio is generated or not.",
      "default": true,
      "type": "boolean",
      "title": "Generate Audio"
    },
    "codec": {
      "description": "'auto' retains default video codec behaviour; 'H264' uses H.264; 'H265' uses H.265.",
      "default": "auto",
      "type": "string",
      "enum": [
        "auto",
        "H264",
        "H265"
      ],
      "title": "Codec"
    },
    "draft": {
      "description": "Generate a draft preview at 480p, overriding resolution. Returns a draft_id for completing the draft at 1080p within seven days.",
      "default": false,
      "type": "boolean",
      "title": "Draft"
    },
    "prompt": {
      "type": "string",
      "description": "The text prompt used to generate the video.",
      "title": "Prompt"
    },
    "video_urls": {
      "description": "Reference videos to guide video generation. Refer to them in the prompt as @Video1, @Video2, etc. Supported formats: MP4, MOV. Up to 10 videos. Each video must be 1.8 to 30.2 seconds and no larger than 200 MB; combined duration must not exceed 30.2 seconds. Dimensions must be 300 to 6,000 pixels per side, aspect ratio 0.4 to 2.5, and frame rate 24 to 60 FPS.",
      "type": "array",
      "title": "Video Urls",
      "items": {
        "type": "string",
        "_fal_ui_field": "video"
      }
    },
    "seed": {
      "type": "integer",
      "description": "Random seed for reproducibility. Note that results may still vary slightly even with the same seed.",
      "title": "Seed"
    },
    "duration": {
      "description": "Duration of the video in seconds. Supports 4 to 30 seconds, or auto to let the model decide based on the prompt.",
      "type": "string",
      "title": "Duration",
      "enum": [
        "4",
        "5",
        "6",
        "7",
        "8",
        "9",
        "10",
        "11",
        "12",
        "13",
        "14",
        "15",
        "16",
        "17",
        "18",
        "19",
        "20",
        "21",
        "22",
        "23",
        "24",
        "25",
        "26",
        "27",
        "28",
        "29",
        "30"
      ],
      "default": "5"
    },
    "end_user_id": {
      "type": "string",
      "description": "The unique user ID of the end user.",
      "title": "End User Id"
    },
    "aspect_ratio": {
      "description": "The aspect ratio of the generated video. Use 16:9 for landscape, 9:16 for portrait/vertical, 1:1 for square, 21:9 for ultrawide cinematic, or auto to let the model decide.",
      "default": "auto",
      "type": "string",
      "enum": [
        "auto",
        "21:9",
        "16:9",
        "4:3",
        "1:1",
        "3:4",
        "9:16"
      ],
      "title": "Aspect Ratio"
    },
    "image_urls": {
      "description": "Reference images to guide video generation. Refer to them in the prompt as @Image1, @Image2, etc. Supported formats: JPG, PNG, WebP, BMP, TIFF, GIF, HEIC, HEIF. Max 30 MB per image. Up to 30 images. Total files across all modalities must not exceed 50.",
      "type": "array",
      "title": "Image Urls",
      "items": {
        "type": "string"
      }
    },
    "resolution": {
      "description": "Video resolution - 480p for faster generation, 720p for balance, 1080p for high quality.",
      "default": "720p",
      "type": "string",
      "title": "Resolution",
      "enum": [
        "480p",
        "720p",
        "1080p"
      ]
    },
    "bitrate_mode": {
      "description": "Output bitrate mode. 'high' requests a higher-quality, larger-file encode from the model; 'standard' uses the default bitrate.",
      "default": "standard",
      "type": "string",
      "enum": [
        "standard",
        "high"
      ],
      "title": "Bitrate Mode"
    },
    "audio_urls": {
      "description": "Reference audio to guide video generation. Refer to them in the prompt as @Audio1, @Audio2, etc. Supported formats: MP3, WAV. Up to 10 files. Each file must be 1.8 to 30.2 seconds and no larger than 15 MB; combined duration must not exceed 30.2 seconds.",
      "type": "array",
      "title": "Audio Urls",
      "items": {
        "type": "string",
        "_fal_ui_field": "audio"
      }
    }
  },
  "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/seedance-2-5-reference-to-video",
  "input": {
    "prompt": "a red cube slowly rotating on a white table, soft studio light",
    "image_urls": [
      "https://storage.googleapis.com/falserverless/example_outputs/nano-banana-2-t2i-output.png"
    ],
    "resolution": "480p",
    "duration": "4",
    "generate_audio": false,
    "aspect_ratio": "1:1"
  }
}
```

## 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/bytedance/seedance-2.5/reference-to-video)

[REST inspection](https://api.agentik.cc/v1/tools/fal/seedance-2-5-reference-to-video) · [OpenAPI](/openapi.json) · [Connection guide](/connect.md)

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