Seedance-1-0-Lite-I2v-250428 - Image To Video

POST

api

contents

generations

tasks

seedance-1-0-lite-i2v-250428 (Image to Video)

curl --request POST \
  --url https://api.example.com/api/v3/contents/generations/tasks

const options = {method: 'POST'};

fetch('https://api.example.com/api/v3/contents/generations/tasks', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.example.com/api/v3/contents/generations/tasks",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.example.com/api/v3/contents/generations/tasks"

	req, _ := http.NewRequest("POST", url, nil)

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

require 'uri'
require 'net/http'

url = URI("https://api.example.com/api/v3/contents/generations/tasks")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)

response = http.request(request)
puts response.read_body

Authentication

Sign up for a GPTProto account at https://gptproto.com
Navigate to the API Keys section in your dashboard
Generate a new API key (sk-xxxxx)
Copy and securely store your API key For authentication details, please refer to the Authentication section.

Initiate Request

curl --location --request POST 'https://gptproto.com/api/v3/contents/generations/tasks' \
--header 'Authorization: GPTPROTO_API_KEY' \
--header 'Content-Type: application/json' \
--data-raw '{
    "model": "seedance-1-0-lite-i2v-250428",
    "content": [
        {
            "type": "text",
            "text": "A girl holding a fox opens her eyes and looks gently at the camera. The fox is held affectionately. The camera slowly pulls back as the girl'\''s hair is blown by the wind. Wind sounds can be heard."
        },
        {
            "type": "image_url",
            "image_url": {
                "url": "https://ark-project.tos-cn-beijing.volces.com/doc_image/i2v_foxrgirl.png"
            }
        }
    ],
    "resolution": "720p",
    "ratio": "16:9",
    "duration": 12
}'

import requests
import json

url = "https://gptproto.com/api/v3/contents/generations/tasks"

headers = {
    "Authorization": "GPTPROTO_API_KEY",
    "Content-Type": "application/json"
}

payload = {
    "model": "seedance-1-0-lite-i2v-250428",
    "content": [
        {
            "type": "text",
            "text": "A girl holding a fox opens her eyes and looks gently at the camera. The fox is held affectionately. The camera slowly pulls back as the girl's hair is blown by the wind. Wind sounds can be heard."
        },
        {
            "type": "image_url",
            "image_url": {
                "url": "https://ark-project.tos-cn-beijing.volces.com/doc_image/i2v_foxrgirl.png"
            }
        }
    ],
    "resolution": "720p",
    "ratio": "16:9",
    "duration": 12
}

response = requests.post(url, headers=headers, data=json.dumps(payload))
print(response.json())

const axios = require('axios');

const url = 'https://gptproto.com/api/v3/contents/generations/tasks';

const headers = {
    'Authorization': 'GPTPROTO_API_KEY',
    'Content-Type': 'application/json'
};

const data = {
    model: 'seedance-1-0-lite-i2v-250428',
    content: [
        {
            type: 'text',
            text: "A girl holding a fox opens her eyes and looks gently at the camera. The fox is held affectionately. The camera slowly pulls back as the girl's hair is blown by the wind. Wind sounds can be heard."
        },
        {
            type: 'image_url',
            image_url: {
                url: 'https://ark-project.tos-cn-beijing.volces.com/doc_image/i2v_foxrgirl.png'
            }
        }
    ],
    resolution: '720p',
    ratio: '16:9',
    duration: 12
};

axios.post(url, data, { headers })
    .then(response => console.log(response.data))
    .catch(error => console.error(error));

package main

import (
    "bytes"
    "encoding/json"
    "fmt"
    "io/ioutil"
    "net/http"
)

func main() {
    url := "https://gptproto.com/api/v3/contents/generations/tasks"

    payload := map[string]interface{}{
        "model": "seedance-1-0-lite-i2v-250428",
        "content": []map[string]interface{}{
            {
                "type": "text",
                "text": "A girl holding a fox opens her eyes and looks gently at the camera. The fox is held affectionately. The camera slowly pulls back as the girl's hair is blown by the wind. Wind sounds can be heard.",
            },
            {
                "type": "image_url",
                "image_url": map[string]string{
                    "url": "https://ark-project.tos-cn-beijing.volces.com/doc_image/i2v_foxrgirl.png",
                },
            },
        },
        "resolution": "720p",
        "ratio":      "16:9",
        "duration":   12,
    }

    jsonData, _ := json.Marshal(payload)

    req, _ := http.NewRequest("POST", url, bytes.NewBuffer(jsonData))
    req.Header.Set("Authorization", "GPTPROTO_API_KEY")
    req.Header.Set("Content-Type", "application/json")

    client := &http.Client{}
    resp, err := client.Do(req)
    if err != nil {
        fmt.Println(err)
        return
    }
    defer resp.Body.Close()

    body, _ := ioutil.ReadAll(resp.Body)
    fmt.Println(string(body))
}

Response Example

{
    "id": "cgt-20251225201056-abc"
}

Query Result

curl -X GET "https://gptproto.com/api/v3/contents/generations/tasks/{id}" \
  -H "Authorization: GPTPROTO_API_KEY" \
  -H "Content-Type: application/json"

import requests
import json

url = "https://gptproto.com/api/v3/contents/generations/tasks/{id}"
headers = {
    "Authorization: GPTPROTO_API_KEY",
    "Content-Type": "application/json"
}

response = requests.get(url, headers=headers)
result = response.json()
print(json.dumps(result, indent=2))

const url = "https://gptproto.com/api/v3/contents/generations/tasks/{id}";
const headers = {
  "Authorization: GPTPROTO_API_KEY",
  "Content-Type": "application/json"
};

fetch(url, {
  method: "GET",
  headers: headers
})
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.error("Error:", error));

package main

import (
    "encoding/json"
    "fmt"
    "io/ioutil"
    "net/http"
)

func main() {
    url := "https://gptproto.com/api/v3/contents/generations/tasks/{id}"

    req, _ := http.NewRequest("GET", url, nil)
    req.Header.Set("Authorization", "GPTPROTO_API_KEY")
    req.Header.Set("Content-Type", "application/json")

    client := &http.Client{}
    resp, err := client.Do(req)
    if err != nil {
        panic(err)
    }
    defer resp.Body.Close()

    body, _ := ioutil.ReadAll(resp.Body)
    fmt.Println(string(body))
}

Response

{
    "id": "cgt-20251225195352-123",
    "model": "doubao-seedance-1-5-pro-251215",
    "status": "succeeded",
    "content": {
        "video_url": "https://example.com/video.mp4"
    },
    "usage": {
        "completion_tokens": 260100,
        "total_tokens": 260100
    },
    "seed": "16108",
    "resolution": "720p",
    "duration": 12,
    "ratio": "16:9",
    "created_at": "1766663633",
    "updated_at": "1766663715",
    "framespersecond": 24
}

Parameters

Core Parameters

Parameter	Type	Required	Default	Range	Description
`model`	string	✅ Yes	-	-	The ID of the model you want to call. You need to enable model service and query the Model ID. You can also call the model through Endpoint ID to get advanced capabilities such as rate limiting, billing type (prepaid/postpaid), running status query, monitoring, and security.
`content`	array	✅ Yes	-	-	Information input to the model for video generation, supporting text and image information.
>`content.type`	string	✅ Yes	-	`text` `image_url`	Type of input content. Use `text` for text input, `image_url` for image input (supports image URL or Base64 encoding).
>`content.text`	string	✅ Yes (if type is text)	-	-	Text content input to the model, describing the expected video to be generated.
>`content.image_url`	object	✅ Yes (if type is image_url)	-	-	Image object input to the model.
>>`content.image_url.url`	string	✅ Yes (if image_url is used)	-	-	Image information, which can be an image URL or Base64 encoded image.
>`content.role`	string	❌ No	-	`first_frame` `last_frame` `reference_image`	Position or purpose of the image. Different roles correspond to different video generation scenarios. See Video Generation Scenarios for details.
`generate_audio`	boolean	❌ No	true	-	Whether to include synchronized sound with the video. Only supported by Seedance 1.5 pro.

Advanced Parameters

Note: Different models may support different parameter options. For more details, please refer to the Model Field Compatibility table.

Parameter	Type	Required	Default	Range	Description
`resolution` (rs)	string	❌ No	720p/1080p	`480p` `720p` `1080p`	Video resolution. Default values vary by model.
`ratio` (rt)	string	❌ No	16:9/adaptive	`16:9` `4:3` `1:1` `3:4` `9:16` `21:9` `adaptive`	Aspect ratio of the generated video.
`duration` (dur)	integer	❌ No	5	[2, 12]	Duration of the generated video in seconds.
`frames` (frames)	integer	❌ No	-	[29, 289] (25+4n)	Number of frames of the generated video.
`framespersecond` (fps)	integer	❌ No	24	24	Frame rate of the video in frames per second.
`seed` (seed)	integer	❌ No	-1	[-1, 2^32-1]	Seed integer for controlling randomness.
`camerafixed` (cf)	boolean	❌ No	false	-	Whether to fix the camera.
`watermark` (wm)	boolean	❌ No	false	-	Whether to include watermark in the generated video.

Model Field Compatibility

resolution (rs): Video resolution

Seedance 1.5 pro, Seedance 1.0 lite default value: 720p Seedance 1.0 pro&pro-fast default value: 1080p

Enumeration values:

480p
720p
1080p: Not supported in reference image scenario; temporarily not supported by Seedance 1.5 pro

ratio (rt): Aspect ratio of the generated video. See Aspect Ratio & Resolution for pixel values corresponding to different aspect ratios.

Default for Text-to-Video is generally 16:9 Default for Image-to-Video is generally adaptive. Note: Default for Reference Image Video Generation is 16:9 Seedance 1.5 pro default is adaptive

Enumeration values:

16:9
4:3
1:1
3:4
9:16
21:9
adaptive: Automatically selects the most appropriate aspect ratio based on the ratio of the uploaded first frame image.

duration (dur) or frames (frames):

Seedance 1.5 pro does not support frames temporarily Choose either duration or frames; frames has higher priority than duration. If you want to generate videos with fractional seconds, it is recommended to specify frames.

Video Generation Scenarios

First frame video generation, first and last frame video generation, and reference image video generation are three mutually exclusive scenarios and cannot be mixed.

{
    "content": [
        {
            "type": "text",
            "text": "Multiple shots. A detective enters a dimly lit room. He examines the clues on the table and picks up an item. The camera shifts to him deep in thought. --ratio 16:9"
        }
    ]
}

{
    "content": [
        {
            "type": "text",
            "text": "A girl holding a fox opens her eyes and looks gently at the camera. The fox is held affectionately. The camera slowly pulls back as the girl's hair is blown by the wind. Wind sounds can be heard. --ratio adaptive --dur 5"
        },
        {
            "type": "image_url",
            "image_url": {
                "url": "https://ark-project.tos-cn-beijing.volces.com/doc_image/i2v_foxrgirl.png"
            }
        }
    ],
}

{
    "model": "doubao-seedance-1-5-pro-251215",
    "content": [
         {
            "type": "text",
            "text": "The girl in the picture says 'cheese' to the camera with 360-degree surrounding camera movement"
        },
        {
            "type": "image_url",
            "image_url": {
                "url": "https://ark-project.tos-cn-beijing.volces.com/doc_image/seepro_first_frame.jpeg"
            },
            "role": "first_frame"
        },
        {
            "type": "image_url",
            "image_url": {
                "url": "https://ark-project.tos-cn-beijing.volces.com/doc_image/seepro_last_frame.jpeg"
            },
            "role": "last_frame"
        }
    ],
    "generate_audio": true
}

{
    "content": [
         {
            "type": "text",
            "text": "[Image 1] A boy wearing glasses and a blue T-shirt with [Image 2] a corgi puppy, sitting on [Image 3] a lawn, in 3D cartoon style"
        },
        {
            "type": "image_url",
            "image_url": {
                "url": "https://ark-project.tos-cn-beijing.volces.com/doc_image/seelite_ref_1.png"
            },
            "role": "reference_image"
        },
        {
            "type": "image_url",
            "image_url": {
                "url": "https://ark-project.tos-cn-beijing.volces.com/doc_image/seelite_ref_2.png"
            },
            "role": "reference_image"
        },
        {
            "type": "image_url",
            "image_url": {
                "url": "https://ark-project.tos-cn-beijing.volces.com/doc_image/seelite_ref_3.png"
            },
            "role": "reference_image"
        }
    ]
}

Scenario	`content.role`	Supported Models	Description
Text-to-Video	Not applicable (text only)	Seedance 1.5 pro Seedance 1.0 pro Seedance 1.0 pro fast Seedance 1.0 lite (doubao-seedance-1-0-lite-t2v)	Generate video from text prompts only.
Image-to-Video (First Frame)	Optional, or `first_frame`	All image-to-video models	Generate video from a first frame image. Requires 1 image_url object.
Image-to-Video (First & Last Frame)	First frame: `first_frame` Last frame: `last_frame`	Seedance 1.5 pro Seedance 1.0 pro Seedance 1.0 lite (doubao-seedance-1-0-lite-i2v)	Generate video from first and last frame images. Requires 2 image_url objects with both roles specified.
Image-to-Video (Reference Images)	`reference_image`	Seedance 1.0 lite (doubao-seedance-1-0-lite-i2v)	Generate video from reference images. Requires 1-4 image_url objects, all with reference_image role.

For First & Last Frame scenario

You can pass the same image for both first and last frame.
If the aspect ratios of first and last frame images are inconsistent, the system will prioritize the first frame and automatically crop the last frame to match.

Aspect Ratio & Resolution

Resolution	Aspect Ratio	Width x Height (Seedance 1.0)	Width x Height (Seedance 1.5 pro)
480p	16:9	864×480	864×496
480p	4:3	736×544	752×560
480p	1:1	640×640	640×640
480p	3:4	544×736	560×752
480p	9:16	480×864	496×864
480p	21:9	960×416	992×432
720p	16:9	1248×704	1280×720
720p	4:3	1120×832	1112×834
720p	1:1	960×960	960×960
720p	3:4	832×1120	834×1112
720p	9:16	704×1248	720×1280
720p	21:9	1504×640	1470×630
1080p	16:9	1920×1088	-
1080p	4:3	1664×1248	-
1080p	1:1	1440×1440	-
1080p	3:4	1248×1664	-
1080p	9:16	1088×1920	-
1080p	21:9	2176×928	-

Text Command Parameters

You can append --[parameters] after the text prompt to control video output specifications, including aspect ratio, frame rate, resolution, etc.

{
  "content": [
    {
      "type": "text",
      "text": "A kitten yawning at the camera. --rs 720p --rt 16:9 --dur 5 --fps 24 --wm true --seed 11 --cf false"
    }
  ]
}

Error Codes

Common Error Codes

Error Code	Error Name	Description
401	Unauthorized	API key is missing or invalid
403	Forbidden	Your API key doesn’t have permission to access this resource, or insufficient balance for the requested operation
429	Too Many Requests	You’ve exceeded your rate limit
500	Internal server error	An internal server error occurred
503	Content policy violation	Content blocked due to safety concerns (actual status code is 400)

​Authentication

​Initiate Request

​Response Example

​Query Result

​Query Result

​Response

​Parameters

​Parameters

​Core Parameters

​Advanced Parameters

​Model Field Compatibility

​Video Generation Scenarios

​Aspect Ratio & Resolution

​Text Command Parameters

​Error Codes

​Error Codes

​Common Error Codes

Authentication

Initiate Request

Response Example

Query Result

Query Result

Response

Parameters

Parameters

Core Parameters

Advanced Parameters

Model Field Compatibility

Video Generation Scenarios

Aspect Ratio & Resolution

Text Command Parameters

Error Codes

Error Codes

Common Error Codes