Gen 4

Gen 4

curl --request POST \
  --url https://api.muvi.video/v1/jobs/submit \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "<string>",
  "input": {
    "prompt": "<string>",
    "image_url": "<string>",
    "aspect_ratio": "<string>",
    "duration": "<string>"
  }
}
'

import requests

url = "https://api.muvi.video/v1/jobs/submit"

payload = {
    "model": "<string>",
    "input": {
        "prompt": "<string>",
        "image_url": "<string>",
        "aspect_ratio": "<string>",
        "duration": "<string>"
    }
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    model: '<string>',
    input: {
      prompt: '<string>',
      image_url: '<string>',
      aspect_ratio: '<string>',
      duration: '<string>'
    }
  })
};

fetch('https://api.muvi.video/v1/jobs/submit', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "jobId": "<string>",
  "status": "<string>",
  "estimatedCompletionTime": "<string>",
  "costMicroCents": 123
}

POST

jobs

submit

Gen 4

curl --request POST \
  --url https://api.muvi.video/v1/jobs/submit \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "<string>",
  "input": {
    "prompt": "<string>",
    "image_url": "<string>",
    "aspect_ratio": "<string>",
    "duration": "<string>"
  }
}
'

import requests

url = "https://api.muvi.video/v1/jobs/submit"

payload = {
    "model": "<string>",
    "input": {
        "prompt": "<string>",
        "image_url": "<string>",
        "aspect_ratio": "<string>",
        "duration": "<string>"
    }
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    model: '<string>',
    input: {
      prompt: '<string>',
      image_url: '<string>',
      aspect_ratio: '<string>',
      duration: '<string>'
    }
  })
};

fetch('https://api.muvi.video/v1/jobs/submit', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "jobId": "<string>",
  "status": "<string>",
  "estimatedCompletionTime": "<string>",
  "costMicroCents": 123
}

Generate videos from images with Runway’s Gen 4 model. Supports image-to-video generation with multiple aspect ratios and duration options.

Property	Value
Provider	Runway
Slug	`runway/gen-4`
Capabilities	Image to Video
Base Cost	100,000 micro-cents/second ($0.10/sec)
Processing Time	~120 seconds

Image to Video

Generate videos from a source image and text prompt. Slug: runway/gen-4/image-to-video

Request Body

model

string

required

Model slug. Use runway/gen-4/image-to-video for image-to-video generation.

input

object

required

Input parameters for image-to-video generation.

Hide properties

prompt

string

required

Text description to guide video generation (max 1000 characters).

image_url

string

required

URL of the source image to animate.

aspect_ratio

string

Video aspect ratio. Default: 16:9. Options: 16:9, 9:16, 1:1, 4:3, 3:4, 21:9.

duration

string

Video duration in seconds. Default: 5. Options: 5, 10.

webhookUrl

string

HTTPS URL to receive a webhook notification when the job completes or fails.

Code Examples

curl -X POST https://api.muvi.video/v1/jobs/submit \
  -H "Authorization: Bearer $PIXELBYTE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "runway/gen-4/image-to-video",
    "input": {
      "prompt": "The camera slowly zooms in as the subject turns to face the viewer",
      "image_url": "https://example.com/portrait.jpg",
      "aspect_ratio": "16:9",
      "duration": "5"
    }
  }'

import requests

response = requests.post(
    "https://api.muvi.video/v1/jobs/submit",
    headers={
        "Authorization": "Bearer YOUR_API_KEY",
        "Content-Type": "application/json"
    },
    json={
        "model": "runway/gen-4/image-to-video",
        "input": {
            "prompt": "The camera slowly zooms in as the subject turns to face the viewer",
            "image_url": "https://example.com/portrait.jpg",
            "aspect_ratio": "16:9",
            "duration": "5"
        }
    }
)

data = response.json()
print(data)

const response = await fetch("https://api.muvi.video/v1/jobs/submit", {
  method: "POST",
  headers: {
    "Authorization": "Bearer YOUR_API_KEY",
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    model: "runway/gen-4/image-to-video",
    input: {
      prompt: "The camera slowly zooms in as the subject turns to face the viewer",
      image_url: "https://example.com/portrait.jpg",
      aspect_ratio: "16:9",
      duration: "5"
    }
  })
});

const data = await response.json();
console.log(data);

Pricing

Base cost: 100,000 micro-cents per second ($0.10/sec)

finalCost = baseCost × duration

Factor	Option	Multiplier
Duration	`5`	5x
	`10`	10x

Default cost: 5 seconds = 100,000 × 5 = 500,000 micro-cents ($0.50)

Response

jobId

string

Unique identifier for the submitted job.

status

string

Initial job status. Always "pending" on successful submission.

estimatedCompletionTime

string

ISO 8601 timestamp of the estimated completion time.

costMicroCents

number

The cost of the job in micro-cents.

Gen 4.5 — Image to Video Gen 4 Turbo

Google

OpenAI

Runway

Kling

Kling Plus

Alibaba

Alibaba Plus

ByteDance

ByteDance Plus

MiniMax Plus

xAI

Image to Video

Request Body

Code Examples

Pricing

Response

​Image to Video

​Request Body

​Code Examples

​Pricing

​Response

Image to Video

Request Body

Code Examples

Pricing

Response