Bytedance Seedance 2.5 Reference to Video API | Pricing & Docs

bytedance/seedance-2.5/reference-to-video/720p

Seedance 2.5 Reference to Video 720p blends up to 9 images, 3 videos, and 3 audio references with a prompt into a 4–30-second 720p clip, with optional native audio.

1. Get started

Use RunComfy's API to run bytedance/seedance-2.5/reference-to-video/720p. For accepted inputs and outputs, see the model's schema.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/bytedance/seedance-2.5/reference-to-video/720p \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "Animate the reference into a cinematic sci-fi shot: the astronaut walks forward across the alien dunes as wind lifts glowing dust, the two pale moons rising, volumetric god rays sweeping across the landscape, the camera slowly pulls back to reveal a vast otherworldly desert, low ambient wind and a deep cinematic drone."
  }'

2. Authentication

Set the YOUR_API_TOKEN environment variable with your API key (manage keys in your Profile) and include it on every request as a Bearer token via the Authorization header: Authorization: Bearer $YOUR_API_TOKEN.

3. API reference

Submit a request

Submit an asynchronous generation job and immediately receive a request_id plus URLs to check status, fetch results, and cancel.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/bytedance/seedance-2.5/reference-to-video/720p \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "Animate the reference into a cinematic sci-fi shot: the astronaut walks forward across the alien dunes as wind lifts glowing dust, the two pale moons rising, volumetric god rays sweeping across the landscape, the camera slowly pulls back to reveal a vast otherworldly desert, low ambient wind and a deep cinematic drone."
  }'

Monitor request status

Fetch the current state for a request_id ("in_queue", "in_progress", "completed", or "cancelled").

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/status \
  --header "Authorization: Bearer <token>"

Retrieve request results

Retrieve the final outputs and metadata for the given request_id; if the job is not complete, the response returns the current state so you can continue polling.

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/result \
  --header "Authorization: Bearer <token>"

Cancel a request

Cancel a queued job by request_id; in-progress jobs cannot be cancelled.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/cancel \
  --header "Authorization: Bearer <token>"

4. File inputs

Hosted file (URL)

Provide a publicly reachable HTTPS URL. Ensure the host allows server-side fetches (no login/cookies required) and isn't rate-limited or blocking bots. Recommended limits: images ≤ 50 MB (~4K), videos ≤ 100 MB (~2–5 min @ 720p). Prefer stable or pre-signed URLs for private assets.

5. Schema

Input schema

{
  "type": "object",
  "title": "Input schema",
  "required": [
    "prompt"
  ],
  "properties": {
    "prompt": {
      "title": "Prompt",
      "description": "Text prompt for the video (Chinese ~≤500 characters, English ~≤1000 words recommended). ",
      "type": "string",
      "default": "Animate the reference into a cinematic sci-fi shot: the astronaut walks forward across the alien dunes as wind lifts glowing dust, the two pale moons rising, volumetric god rays sweeping across the landscape, the camera slowly pulls back to reveal a vast otherworldly desert, low ambient wind and a deep cinematic drone."
    },
    "images": {
      "title": "Reference Images",
      "description": "Reference images to steer environment and style. Up to 9 images.",
      "type": "array",
      "default": [
        "https://playgrounds-storage-public.runcomfy.net/tools/7385/media-files/input-1-1.png"
      ],
      "items": {
        "type": "string",
        "format": "image_uri"
      },
      "maxItems": 9
    },
    "videos": {
      "title": "Reference Videos",
      "description": "Reference video clips for camera motion and rhythm. Up to 3 clips.",
      "type": "array",
      "items": {
        "type": "string",
        "format": "video_uri"
      },
      "maxItems": 3
    },
    "audios": {
      "title": "Reference Audio",
      "description": "Reference audio for mood and pacing. Up to 3 files.",
      "type": "array",
      "items": {
        "type": "string",
        "format": "audio_uri"
      },
      "maxItems": 3
    },
    "aspect_ratio": {
      "title": "Aspect Ratio (W:H)",
      "description": "Aspect ratio of the generated video.",
      "type": "string",
      "enum": [
        "16:9",
        "9:16",
        "1:1",
        "4:3",
        "3:4",
        "21:9",
        "adaptive"
      ],
      "default": "16:9"
    },
    "duration": {
      "title": "Duration (seconds)",
      "description": "The duration of the generated video in seconds. Between 4 and 30.",
      "type": "integer",
      "minimum": 4,
      "maximum": 30,
      "default": 5
    },
    "generate_audio": {
      "title": "Generate Audio",
      "description": "When true, the model outputs video with synchronized audio (speech, SFX, music).",
      "type": "boolean",
      "default": true
    }
  }
}

Output schema

{
  "output": {
    "type": "object",
    "properties": {
      "image": {
        "type": "string",
        "format": "uri",
        "description": "single image URL"
      },
      "video": {
        "type": "string",
        "format": "uri",
        "description": "single video URL"
      },
      "images": {
        "type": "array",
        "description": "multiple image URLs",
        "items": {
          "type": "string",
          "format": "uri"
        }
      },
      "videos": {
        "type": "array",
        "description": "multiple video URLs",
        "items": {
          "type": "string",
          "format": "uri"
        }
      }
    }
  }
}

RunComfy

RunComfy is the premier ComfyUI platform, offering ComfyUI online environment and services, along with ComfyUI workflows featuring stunning visuals. RunComfy also provides AI Models, enabling artists to harness the latest AI tools to create incredible art.

1. Get started

Use RunComfy's API to run bytedance/seedance-2.5/reference-to-video/720p. For accepted inputs and outputs, see the model's schema.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/bytedance/seedance-2.5/reference-to-video/720p \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "Animate the reference into a cinematic sci-fi shot: the astronaut walks forward across the alien dunes as wind lifts glowing dust, the two pale moons rising, volumetric god rays sweeping across the landscape, the camera slowly pulls back to reveal a vast otherworldly desert, low ambient wind and a deep cinematic drone."
  }'

3. API reference

Submit a request

Submit an asynchronous generation job and immediately receive a request_id plus URLs to check status, fetch results, and cancel.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/bytedance/seedance-2.5/reference-to-video/720p \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "Animate the reference into a cinematic sci-fi shot: the astronaut walks forward across the alien dunes as wind lifts glowing dust, the two pale moons rising, volumetric god rays sweeping across the landscape, the camera slowly pulls back to reveal a vast otherworldly desert, low ambient wind and a deep cinematic drone."
  }'

Monitor request status

Fetch the current state for a request_id ("in_queue", "in_progress", "completed", or "cancelled").

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/status \
  --header "Authorization: Bearer <token>"

Retrieve request results

Retrieve the final outputs and metadata for the given request_id; if the job is not complete, the response returns the current state so you can continue polling.

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/result \
  --header "Authorization: Bearer <token>"

Cancel a request

Cancel a queued job by request_id; in-progress jobs cannot be cancelled.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/cancel \
  --header "Authorization: Bearer <token>"

4. File inputs

Hosted file (URL)

5. Schema

Input schema

{
  "type": "object",
  "title": "Input schema",
  "required": [
    "prompt"
  ],
  "properties": {
    "prompt": {
      "title": "Prompt",
      "description": "Text prompt for the video (Chinese ~≤500 characters, English ~≤1000 words recommended). ",
      "type": "string",
      "default": "Animate the reference into a cinematic sci-fi shot: the astronaut walks forward across the alien dunes as wind lifts glowing dust, the two pale moons rising, volumetric god rays sweeping across the landscape, the camera slowly pulls back to reveal a vast otherworldly desert, low ambient wind and a deep cinematic drone."
    },
    "images": {
      "title": "Reference Images",
      "description": "Reference images to steer environment and style. Up to 9 images.",
      "type": "array",
      "default": [
        "https://playgrounds-storage-public.runcomfy.net/tools/7385/media-files/input-1-1.png"
      ],
      "items": {
        "type": "string",
        "format": "image_uri"
      },
      "maxItems": 9
    },
    "videos": {
      "title": "Reference Videos",
      "description": "Reference video clips for camera motion and rhythm. Up to 3 clips.",
      "type": "array",
      "items": {
        "type": "string",
        "format": "video_uri"
      },
      "maxItems": 3
    },
    "audios": {
      "title": "Reference Audio",
      "description": "Reference audio for mood and pacing. Up to 3 files.",
      "type": "array",
      "items": {
        "type": "string",
        "format": "audio_uri"
      },
      "maxItems": 3
    },
    "aspect_ratio": {
      "title": "Aspect Ratio (W:H)",
      "description": "Aspect ratio of the generated video.",
      "type": "string",
      "enum": [
        "16:9",
        "9:16",
        "1:1",
        "4:3",
        "3:4",
        "21:9",
        "adaptive"
      ],
      "default": "16:9"
    },
    "duration": {
      "title": "Duration (seconds)",
      "description": "The duration of the generated video in seconds. Between 4 and 30.",
      "type": "integer",
      "minimum": 4,
      "maximum": 30,
      "default": 5
    },
    "generate_audio": {
      "title": "Generate Audio",
      "description": "When true, the model outputs video with synchronized audio (speech, SFX, music).",
      "type": "boolean",
      "default": true
    }
  }
}

Output schema

{
  "output": {
    "type": "object",
    "properties": {
      "image": {
        "type": "string",
        "format": "uri",
        "description": "single image URL"
      },
      "video": {
        "type": "string",
        "format": "uri",
        "description": "single video URL"
      },
      "images": {
        "type": "array",
        "description": "multiple image URLs",
        "items": {
          "type": "string",
          "format": "uri"
        }
      },
      "videos": {
        "type": "array",
        "description": "multiple video URLs",
        "items": {
          "type": "string",
          "format": "uri"
        }
      }
    }
  }
}

Seedance 2.5 Reference to Video 720p blends up to 9 images, 3 videos, and 3 audio references with a prompt into a 4–30-second 720p clip, with optional native audio.

Table of contents

1. Get started

2. Authentication

3. API reference

Submit a request

Monitor request status

Retrieve request results

Cancel a request

4. File inputs

Hosted file (URL)

5. Schema

Input schema

Output schema

Seedance 2.5 Reference to Video 720p blends up to 9 images, 3 videos, and 3 audio references with a prompt into a 4–30-second 720p clip, with optional native audio.

Table of contents

1. Get started

2. Authentication

3. API reference

Submit a request

Monitor request status

Retrieve request results

Cancel a request

4. File inputs

Hosted file (URL)

5. Schema

Input schema

Output schema

Seedance 2.5 Reference to Video: Consistent Cinematic Clips from References on Models and API | RunComfy

Seedance 2.5 Reference to Video 720p blends up to 9 images, 3 videos, and 3 audio references with a prompt into a 4–30-second 720p clip, with optional native audio.

Table of contents

1. Get started

2. Authentication

3. API reference

Submit a request

Monitor request status

Retrieve request results

Cancel a request

4. File inputs

Hosted file (URL)

5. Schema

Input schema

Output schema

Seedance 2.5 Reference to Video: Consistent Cinematic Clips from References on Models and API | RunComfy

Seedance 2.5 Reference to Video 720p blends up to 9 images, 3 videos, and 3 audio references with a prompt into a 4–30-second 720p clip, with optional native audio.

Table of contents

1. Get started

2. Authentication

3. API reference

Submit a request

Monitor request status

Retrieve request results

Cancel a request

4. File inputs

Hosted file (URL)

5. Schema

Input schema

Output schema