Google Veo 3.1 videogeneration API

{
  "prompt": "A golden retriever running through a field of flowers at sunset",
  "model": "veo3_lite",           // Options: "veo3_lite", "veo3_fast", "veo3"
  "aspectRatio": "16:9",          // Options: "16:9", "9:16", "Auto"
  "imageUrls": [],                // Optional: Array of 1-2 image URLs
  "seeds": 42069,                 // Optional: 10000-99999 for reproducible results
  "watermark": "UlazAI",          // Optional: Max 50 characters
  "enableFallback": false,        // Optional fallback attempt; check current extra credits
  "enableTranslation": true       // Optional: Auto-translate to English
}

{
  "success": true,
  "data": {
    "task_id": "veo31_abc123def456",
    "status": "processing",
    "model": "veo3_fast",
    "credits_charged": 100,
    "credits_remaining": 900,
    "estimated_time": "varies by queue",
    "message": "Veo 3.1 video generation started successfully"
  }
}

{
  "success": false,
  "error": "Insufficient credits. Required: 100, Available: 50"
}

curl -X POST https://ulazai.com/veo31/api/generate/ \
  -H "Authorization: Token YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "A golden retriever running through a field of flowers at sunset, slow motion, cinematic lighting",
    "model": "veo3_fast",
    "aspectRatio": "16:9",
    "watermark": "MyBrand",
    "enableTranslation": true
  }'

curl -X POST https://ulazai.com/veo31/api/generate/ \
  -H "Authorization: Token YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "The character slowly turns their head and smiles at the camera",
    "model": "veo3",
    "aspectRatio": "16:9",
    "imageUrls": ["https://your-domain.com/start-frame.jpg"],
    "seeds": 42069,
    "enableFallback": true
  }'

import requests
import time

API_KEY = "your_api_key_here"
BASE_URL = "https://ulazai.com"

# Generate video
response = requests.post(
    f"{BASE_URL}/veo31/api/generate/",
    headers={
        "Authorization": f"Token {API_KEY}",
        "Content-Type": "application/json"
    },
    json={
        "prompt": "A serene mountain lake at sunrise with mist rising from the water",
        "model": "veo3_fast",
        "aspectRatio": "16:9",
        "watermark": "MyBrand"
    }
)

data = response.json()
if data["success"]:
    task_id = data["data"]["task_id"]
    print(f"Task created: {task_id}")

    # Poll for completion
    while True:
        status_response = requests.get(
            f"{BASE_URL}/veo31/api/status/{task_id}/",
            headers={"Authorization": f"Token {API_KEY}"}
        )

        status_data = status_response.json()
        if status_data["data"]["status"] == "completed":
            video_url = status_data["data"]["video_url"]
            print(f"Video ready: {video_url}")
            break
        elif status_data["data"]["status"] == "failed":
            print(f"Generation failed: {status_data['data']['error_message']}")
            break

        time.sleep(5)  # Poll every 5 seconds
else:
    print(f"Error: {data['error']}")

{
  "success": true,
  "data": {
    "task_id": "veo31_abc123def456",
    "status": "processing",
    "model": "veo3_fast",
    "prompt": "A golden retriever running through flowers",
    "credits_charged": 100
  }
}

{
  "success": true,
  "data": {
    "task_id": "veo31_abc123def456",
    "status": "completed",
    "video_url": "https://cdn.ulazai.com/videos/veo31_abc123.mp4",
    "thumbnail_url": "https://cdn.ulazai.com/videos/veo31_abc123_thumb.jpg",
    "resolution": "1080p",
    "duration": 8,
    "aspect_ratio": "16:9",
    "fallback_used": false,
    "credits_charged": 100
  }
}

{
  "success": true,
  "data": {
    "task_id": "veo31_abc123def456",
    "status": "failed",
    "error_message": "Content policy violation. Enable fallback mode to retry.",
    "credits_refunded": 100
  }
}

curl -X GET https://ulazai.com/veo31/api/status/veo31_abc123def456/ \
  -H "Authorization: Token YOUR_API_KEY"

Content-Type: multipart/form-data

image: (binary file data)

{
  "success": true,
  "url": "https://cdn.ulazai.com/uploads/frame_abc123.jpg",
  "message": "Image uploaded successfully"
}

curl -X POST https://ulazai.com/veo31/api/upload-frame/ \
  -H "Authorization: Token YOUR_API_KEY" \
  -F "image=@/path/to/your/image.jpg"