POST gen2/create

Create a 4-second-long video using text and/or image prompts

Request Headers
Request Body
Responses
Model
Examples
Try It

Runway AI Tools » Audio tools » Text/Image to Video » Gen-2.

Please be aware that Runway’s moderation system analyzes your image and text prompts and may fail task with moderation message if the prompt is determined to be offensive. Runway monitors the rate and the number of moderated tasks, which may result in your account being suspended when the internal threshold is exceeded.

https://api.useapi.net/v1/runwayml/gen2/create

Request Headers

Authorization: Bearer {API token}
Content-Type: application/json
# Alternatively you can use multipart/form-data
# Content-Type: multipart/form-data

API token is required, see Setup useapi.net for details.

Request Body

{
    "email": "Optional Runway API account email",
    "text_prompt": "Optional text prompt",
    "image_assetId": "Optional assetId of image asset",
    "image_preview": "Optional image URL generated by GET /text_to_image_preview",
    "upscale": true,
    "interpolate": true,
    "style": "pixel_art",
    "aspect_ratio": "3:4",
    "motion": 10,
    "horizontal": -10,
    "vertical": -5,
    "roll": -1,
    "zoom": 2,
    "pan": 5,
    "tilt": 10,
    "seed": 12345678,
    "exploreMode": true,
    "replyUrl": "Place your call back URL here",
    "replyRef": "Place your reference id here",
    "maxJobs": 5,
}

email is optional, if not provided and parameter image_assetId is not specified API will randomly select available account.
text_prompt is optional. Describe your shot. Gen-2 prompt tips.
image_assetId is optional. Specify the image assetId you want to be present in the first frame. Use GET /assets/?mediaType=image to see the list of image assets. To upload a new image asset use POST /assets.
Specify image_assetId or image_preview but not both.
image_preview is optional. Specify the image you want to be present in the first frame. The image URL must be generated using the GET /text_to_image_preview.
Specify image_preview or image_assetId but not both.
upscale is optional. Set to true for 2K upscaling, default is false is for 720p output.
Supported values: true, false (default).
interpolate is optional.
Supported values: true (default), false.
style is optional. If not provided cinematic will be used by default.
Supported values: cinematic, abandoned, abstract_sculpture, advertising, anime, architectural, cartoon, cine_lens, claymation, concept_art, digital_art, duotone_artistic_photo, forestpunk, frost, graphic_novel, graphite, impressionist_painting, isometric_3d, low_poly_3d, macro_photography, marker_drawing, moody_film, pixel_art, retro_photography, sci-fi_art, stickers, storyboard, actor_casting, thriller, 35mm, 3d_cartoon, 3d_render, 80s_vaporwave.
This parameter can not be used with image_preview or image_assetId, your output will match the style of your image.
aspect_ratio is optional. If not provided 16:9 will be used by default.
Supported values: 21:9,1:1, 9:16, 16:9, 4:3, 3:4
This parameter can not be used with image_preview or image_assetId, your output will match the aspect ratio of your image.
motion is optional. Increase or decrease the intensity of motion in your video. Higher values result in more motion. This parameter is not compatible with other motion parameters below.
Supported values: 1…10.
horizontal is optional. Specify horizontal motion.
Supported values: -10…10.
vertical is optional. Specify vertical motion.
Supported values: -10…10.
roll is optional. Specify roll motion.
Supported values: -10…10.
zoom is optional. Specify zoom motion.
Supported values: -10…10.
pan is optional. Specify pan motion.
Supported values: -10…10.
tilt is optional. Specify tilt motion.
Supported values: -10…10.
seed is optional.
Valid range 1…4294967294.
exploreMode is optional. Set to true if you have a Runway Unlimited plan and wish to execute relaxed generation. You are not charged credits for Explore mode generations.
replyUrl is optional, if not provided value from account will be used.
Place here your callback URL. API will call the provided replyUrl once Runway task completed or failed.
Maximum length 1024 characters.
We recommend using sites like webhook.site to test callback URL functionality.
replyRef is optional, place here your reference id which will be stored and returned along with this Runway task response / result.
Maximum length 1024 characters.
maxJobs is optional, if not provided value for referenced by image assetId account will be used.
Valid range: 1…10.

Responses

200 OK

Use returned taskId to retrieve task status and results using GET /tasks/taskId. The generated video url can be found in the artifacts array of the task with the status SUCCEEDED.

If you specify the optional parameter replyUrl the API will call the provided replyUrl with task progress updates until the task is complete or fails.

{
    "taskId": "user:user_id-runwayml:account_email-task:task_uuid",
    "id": "<uuid>",
    "name": "<name>",
    "image": null,
    "createdAt": "2024-08-01T01:02:03.456Z",
    "updatedAt": "2024-08-01T01:02:03.456Z",
    "taskType": "gen2",
    "options": {
        "name": "<name>",
        "seconds": 4,
        "gen2Options": {
            "mode": "gen2",
            "text_prompt": "<name>",
            "seed": 45678,
            "interpolate": true,
            "upscale": true,
            "watermark": false,
            "motion_score": 6,
            "use_motion_score": true,
            "use_motion_vectors": false,
            "init_image": "<asset image url>",
            "width": 1366,
            "height": 768
        },
        "exploreMode": true,
        "assetGroupName": "Generative Video",
        "recordingEnabled": true
    },
    "status": "PENDING",
    "error": null,
    "progressText": null,
    "progressRatio": null,
    "estimatedTimeToStartSeconds": 0.1,
    "artifacts": [],
    "sharedAsset": null,
    "features": {
        "storageGB": 500,
        "numPlanCredits_permitted": 2250,
        "numPlanCredits_used": 1315
    },    
    "replyUrl": "https://webhook.site/abc",
    "replyRef": "<your optional reference id>",
    "code": 200
}

400 Bad Request

{
  "error": "<Error message>",
  "code": 400
}

401 Unauthorized

{
  "error": "Unauthorized",
  "code": 401
}

404 Not Found

{
    "error": "Unable to retrieve assetId <uuid> (Not found.)",
    "code": 404
}

429 Too Many Requests

Wait in a loop for at least 10..30 seconds and retry again.

There are two possible cases for API response 429:

API query is full and can not accept new gen2/create requests. Size of query defined by maxJobs optional parameter.

{
    "error": "Account <Runway account email> is busy executing <Account maxJobs> tasks",
    "runningTasks": {
        "<Runway account email>": [
            {
                "email": "<Runway account email>",
                "taskId": "user:user_id-runwayml:account_email-task:task_#1_uuid",
                "id": "<uuid>",
                "replyUrl": "<replyUrl if provided>",
                "replyRef": "<replyRef if provided>"
            },
            {
                "email": "<Runway account email>",
                "taskId": "user:user_id-runwayml:account_email-task:task_#N_uuid",
                "id": "<uuid>",
                "replyUrl": "<replyUrl if provided>",
                "replyRef": "<replyRef if provided>"
            }
        ]
    },
    "code": 429
}

The API received an HTTP response status 429 from Runway. Runway has dynamic query management and may limit the number of simultaneously executed tasks based on internal service load and policies.

{
    "error": "You have too many tasks running or pending. Please wait for some of them to finish before starting more."
}

Model

{ // TypeScript, all fields are optional
    taskId: string,
    id: string,
    name: string,
    image: string,
    createdAt: string,
    updatedAt: string,
    taskType: string,
    options: {
        name: string,
        seconds: number,
        gen2Options: {
            mode: string,
            text_prompt: string,
            seed: number,
            interpolate: boolean,
            upscale: boolean,
            watermark: boolean,
            use_motion_score: boolean,
            use_motion_vectors: boolean,
            motion_vector: {
                x: number,
                y: number,
                r: number,
                z: number,
                bg_x_pan: number,
                bg_y_pan: number
            },
            motion_score: number,
            init_image: string,
            image_prompt: string,
            style: string,
            width: number,
            height: number
        },
        exploreMode: boolean,
        assetGroupName: string,
        recordingEnabled: boolean
    },
    status: string,
    progressText: string,
    progressRatio: number,
    estimatedTimeToStartSeconds: number,
    artifacts: any[],
    sharedAsset: any,
    features: {
      storageGB: number,
      numPlanCredits_permitted: number,
      numPlanCredits_used: number
    },    
    error: {
      errorMessage: string,
      reason: string,
      message: string,
      moderation_category: string,
      tally_asimov: boolean
    },
    code: number,
    replyUrl: string,
    replyRef: string
}

Examples

curl -H "Accept: application/json" \
     -H "Content-Type: application/json" \
     -H "Authorization: Bearer …" \
     -X POST "https://api.useapi.net/v1/runwayml/gen2/create" \
     -d '{"image_assetId": "…", "text_prompt": "…"}'

const image_assetId = "assetId of image asset";      
const text_prompt = "text prompt";      
const apiUrl = `https://api.useapi.net/v1/runwayml/gen2/create`; 
const token = "API token";
const data = { 
  method: 'POST',
  headers: {
    'Authorization': `Bearer ${token}`,
    'Content-Type': 'application/json' }
};
data.body = JSON.stringify({ 
  image_assetId, text_prompt
});
const response = await fetch(apiUrl, data);
const result = await response.json();
console.log("response", {response, result});

import requests
image_assetId = "assetId of image asset"      
text_prompt = "text prompt"      
apiUrl = f"https://api.useapi.net/v1/runwayml/gen2/create" 
token = "API token"
headers = {
    "Content-Type": "application/json", 
    "Authorization" : f"Bearer {token}"
}
body = {
    "image_assetId": f"{image_assetId}",
    "text_prompt": f"{text_prompt}"
}
response = requests.post(apiUrl, headers=headers, json=body)
print(response, response.json())

Try It

API token email (previously configured via POST /accounts/email) text_prompt (Gen-2 prompt tips) image_assetId (GET /assets/?mediaType=image to see the list of image assets) input-image_preview (URL generated by GET /text_to_image_preview) upscale interpolate style aspect_ratio motion horizontal vertical roll
zoom
pan
tilt
seed
exploreMode replyUrl replyRef maxJobs