Bytedance Seedance 2.5 Image to Video API | Pricing & Docs

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

Seedance 2.5 Image to Video 720p animates one still image into a 4–30-second 720p clip with optional native audio. The output aspect ratio follows your input image.

1. Get started

Use RunComfy's API to run bytedance/seedance-2.5/image-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/image-to-video/720p \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "The lion slowly lifts its head and opens its mouth in a powerful roar, mane rippling in the warm wind, dust and tiny insects drifting through golden backlight, subtle slow-motion, cinematic wildlife shot with shallow depth of field and natural savanna ambience.",
    "image": "https://playgrounds-storage-public.runcomfy.net/tools/7384/media-files/input-1-1.png"
  }'

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/image-to-video/720p \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "The lion slowly lifts its head and opens its mouth in a powerful roar, mane rippling in the warm wind, dust and tiny insects drifting through golden backlight, subtle slow-motion, cinematic wildlife shot with shallow depth of field and natural savanna ambience.",
    "image": "https://playgrounds-storage-public.runcomfy.net/tools/7384/media-files/input-1-1.png"
  }'

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",
    "image"
  ],
  "properties": {
    "prompt": {
      "title": "Prompt",
      "description": "Text prompt for the video (Chinese ~≤500 characters, English ~≤1000 words recommended). ",
      "type": "string",
      "default": "The lion slowly lifts its head and opens its mouth in a powerful roar, mane rippling in the warm wind, dust and tiny insects drifting through golden backlight, subtle slow-motion, cinematic wildlife shot with shallow depth of field and natural savanna ambience."
    },
    "image": {
      "title": "Image",
      "description": "Input image that will be animated into a video.",
      "type": "string",
      "default": "https://playgrounds-storage-public.runcomfy.net/tools/7384/media-files/input-1-1.png"
    },
    "duration": {
      "title": "Duration (seconds)",
      "description": "The duration of the generated video in seconds. Default is 5.",
      "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/image-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/image-to-video/720p \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "The lion slowly lifts its head and opens its mouth in a powerful roar, mane rippling in the warm wind, dust and tiny insects drifting through golden backlight, subtle slow-motion, cinematic wildlife shot with shallow depth of field and natural savanna ambience.",
    "image": "https://playgrounds-storage-public.runcomfy.net/tools/7384/media-files/input-1-1.png"
  }'

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/image-to-video/720p \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "The lion slowly lifts its head and opens its mouth in a powerful roar, mane rippling in the warm wind, dust and tiny insects drifting through golden backlight, subtle slow-motion, cinematic wildlife shot with shallow depth of field and natural savanna ambience.",
    "image": "https://playgrounds-storage-public.runcomfy.net/tools/7384/media-files/input-1-1.png"
  }'

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",
    "image"
  ],
  "properties": {
    "prompt": {
      "title": "Prompt",
      "description": "Text prompt for the video (Chinese ~≤500 characters, English ~≤1000 words recommended). ",
      "type": "string",
      "default": "The lion slowly lifts its head and opens its mouth in a powerful roar, mane rippling in the warm wind, dust and tiny insects drifting through golden backlight, subtle slow-motion, cinematic wildlife shot with shallow depth of field and natural savanna ambience."
    },
    "image": {
      "title": "Image",
      "description": "Input image that will be animated into a video.",
      "type": "string",
      "default": "https://playgrounds-storage-public.runcomfy.net/tools/7384/media-files/input-1-1.png"
    },
    "duration": {
      "title": "Duration (seconds)",
      "description": "The duration of the generated video in seconds. Default is 5.",
      "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 Image to Video 720p animates one still image into a 4–30-second 720p clip with optional native audio. The output aspect ratio follows your input image.

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 Image to Video 720p animates one still image into a 4–30-second 720p clip with optional native audio. The output aspect ratio follows your input image.

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 Image to Video: Cinematic Animation with Native Audio on Models and API | RunComfy

Seedance 2.5 Image to Video 720p animates one still image into a 4–30-second 720p clip with optional native audio. The output aspect ratio follows your input image.

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 Image to Video: Cinematic Animation with Native Audio on Models and API | RunComfy

Seedance 2.5 Image to Video 720p animates one still image into a 4–30-second 720p clip with optional native audio. The output aspect ratio follows your input image.

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