# Source: https://docs.aimlapi.com/api-references/video-models/luma-ai/luma-ray-flash-2.md

# Luma Ray Flash 2

{% columns %}
{% column width="66.66666666666666%" %}
{% hint style="info" %}
This documentation is valid for the following list of our models:

* `luma/ray-flash-2`
  {% endhint %}
  {% endcolumn %}

{% column width="33.33333333333334%" %} <a href="https://aimlapi.com/app/luma/ray-flash-2" class="button primary">Try in Playground</a>
{% endcolumn %}
{% endcolumns %}

This model generates up to 9-second clips at 4K, compared to lower resolutions and shorter durations in [Ray 1.6](https://docs.aimlapi.com/api-references/video-models/luma-ai/broken-reference). You can specify the first and last frames as images or extend previously generated videos by passing their generation IDs. Looped videos are also supported.\
This version is nearly twice as fast as [Luma Ray 2](https://docs.aimlapi.com/api-references/video-models/luma-ai/luma-ray-2).

## Setup your API Key

If you don’t have an API key for the AI/ML API yet, feel free to use our [Quickstart guide](https://docs.aimlapi.com/quickstart/setting-up).

## How to Make a Call

<details>

<summary>Step-by-Step Instructions</summary>

Generating a video using this model involves sequentially calling two endpoints:

* The first one is for creating and sending a video generation task to the server (returns a generation ID).
* The second one is for requesting the generated video from the server using the generation ID received from the first endpoint.

Below, you can find both corresponding API schemas.

</details>

## API Schemas

### Create a video generation task and send it to the server

You can generate a video using this API. In the basic setup, you only need a reference image and a prompt.\
This endpoint creates and sends a video generation task to the server — and returns a generation ID.

## POST /v2/video/generations

>

```json
{"openapi":"3.0.0","info":{"title":"AIML API","version":"1.0.0"},"servers":[{"url":"https://api.aimlapi.com"}],"paths":{"/v2/video/generations":{"post":{"operationId":"_v2_video_generations","requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"model":{"type":"string","enum":["luma/ray-flash-2"]},"prompt":{"type":"string","description":"The text description of the scene, subject, or action to generate in the video."},"resolution":{"type":"string","enum":["540p","720p","1080p","4k"],"default":"1080p","description":"The resolution of the output video, where the number refers to the short side in pixels."},"aspect_ratio":{"type":"string","enum":["1:1","16:9","9:16","4:3","3:4","21:9","9:21"],"default":"16:9","description":"The aspect ratio of the generated video."},"duration":{"type":"integer","description":"The length of the output video in seconds.","enum":[5,9],"default":"5"},"keyframes":{"type":"object","properties":{"frame0":{"anyOf":[{"type":"object","properties":{"type":{"type":"string","enum":["image"]},"url":{"type":"string","format":"uri"}},"required":["type","url"]},{"type":"object","properties":{"type":{"type":"string","enum":["generation"]},"id":{"type":"string","format":"uuid"}},"required":["type","id"]},{"nullable":true}]},"frame1":{"anyOf":[{"type":"object","properties":{"type":{"type":"string","enum":["image"]},"url":{"type":"string","format":"uri"}},"required":["type","url"]},{"type":"object","properties":{"type":{"type":"string","enum":["generation"]},"id":{"type":"string","format":"uuid"}},"required":["type","id"]},{"nullable":true}]}},"description":"Keyframes for image-to-video, extend, or interpolate"},"loop":{"type":"boolean","default":false,"description":"Whether to loop the video"}},"required":["model","prompt"],"title":"luma/ray-flash-2"}}}},"responses":{"200":{"content":{"application/json":{"schema":{"type":"object","properties":{"id":{"type":"string","description":"The ID of the generated video."},"status":{"type":"string","enum":["queued","generating","completed","error"],"description":"The current status of the generation task."},"video":{"type":"object","nullable":true,"properties":{"url":{"type":"string","format":"uri","description":"The URL where the file can be downloaded from."}},"required":["url"]},"error":{"type":"object","nullable":true,"properties":{"name":{"type":"string"},"message":{"type":"string"}},"required":["name","message"],"description":"Description of the error, if any."},"meta":{"type":"object","nullable":true,"properties":{"usage":{"type":"object","nullable":true,"properties":{"credits_used":{"type":"number","description":"The number of tokens consumed during generation."}},"required":["credits_used"]}},"description":"Additional details about the generation."}},"required":["id","status"]}}}}}}}}}
```

### Retrieve the generated video from the server

After sending a request for video generation, this task is added to the queue. This endpoint lets you check the status of a video generation task using its `id`, obtained from the endpoint described above.\
If the video generation task status is `completed`, the response will include the final result — with the generated video URL and additional metadata.

## GET /v2/video/generations

>

```json
{"openapi":"3.0.0","info":{"title":"AI/ML Gateway","version":"1.0"},"servers":[{"url":"https://api.aimlapi.com"}],"paths":{"/v2/video/generations":{"get":{"operationId":"VideoControllerV2_pollVideo_v2","parameters":[{"name":"generation_id","required":true,"in":"query","schema":{"type":"string"}}],"responses":{"200":{"description":"Successfully generated video","content":{"application/json":{"schema":{"$ref":"#/components/schemas/Video.v2.PollVideoResponseDTO"}}}}},"tags":["Video Models"]}}},"components":{"schemas":{"Video.v2.PollVideoResponseDTO":{"type":"object","properties":{"id":{"type":"string","description":"The ID of the generated video."},"status":{"type":"string","enum":["queued","generating","completed","error"],"description":"The current status of the generation task."},"video":{"type":"object","nullable":true,"properties":{"url":{"type":"string","format":"uri","description":"The URL where the file can be downloaded from."},"duration":{"type":"number","nullable":true,"description":"The duration of the video."}},"required":["url"]},"duration":{"type":"number","nullable":true,"description":"The duration of the video."},"error":{"nullable":true,"description":"Description of the error, if any."},"meta":{"type":"object","nullable":true,"properties":{"usage":{"type":"object","nullable":true,"properties":{"tokens_used":{"type":"number","description":"The number of tokens consumed during generation."}},"required":["tokens_used"]}},"description":"Additional details about the generation."}},"required":["id","status"]}}}}
```

## Full Example: Generating and Retrieving the Video From the Server

The code below creates a video generation task, then automatically polls the server every **10** seconds until it finally receives the video URL.

{% tabs %}
{% tab title="Python" %}
{% code overflow="wrap" %}

```python
import requests
import time

# replace <YOUR_AIMLAPI_KEY> with your actual AI/ML API key
api_key = "<YOUR_AIMLAPI_KEY>"
base_url = "https://api.aimlapi.com/v2"


# Creating and sending a video generation task to the server
def generate_video():
    url = f"{base_url}/video/generations"
    headers = {
        "Authorization": f"Bearer {api_key}", 
    }

    data = {
        "model": "luma/ray-flash-2",
        "prompt": "The camera moves down and gradually dives underwater and moves through a dark, moody world of greenish light and drifting plants. Giant white koi fish emerge from the shadows and turn curiously toward the camera as it passes, their scales shimmering faintly in the murky depths.",
        "keyframes":{    
            "frame0": {
                "type": "image",
                "url": "https://raw.githubusercontent.com/aimlapi/api-docs/main/reference-files/landscape.jpg",
            },
            "frame1": {
                "type": "image",
                "url": "https://cdn.aimlapi.com/assets/content/white-fish.png",
            },
        },
        "duration": "5",       
    }
 
    response = requests.post(url, json=data, headers=headers)
    
    if response.status_code >= 400:
        print(f"Error: {response.status_code} - {response.text}")
    else:
        response_data = response.json()
        # print(response_data)
        return response_data
    

# Requesting the result of the task from the server using the generation_id
def get_video(gen_id):
    url = f"{base_url}/video/generations"
    params = {
        "generation_id": gen_id,
    }
    
    # Insert your AIML API Key instead of <YOUR_AIMLAPI_KEY>:
    headers = {
        "Authorization": f"Bearer {api_key}", 
        "Content-Type": "application/json"
        }

    response = requests.get(url, params=params, headers=headers)
    # print("Generation:", response.json())
    return response.json()


def main():
     # Running video generation and getting a task id
    gen_response = generate_video()
    gen_id = gen_response.get("id")
    print("Generation ID:  ", gen_id)

    # Trying to retrieve the video from the server every 10 sec
    if gen_id:
        start_time = time.time()

        timeout = 600
        while time.time() - start_time < timeout:
            response_data = get_video(gen_id)

            if response_data is None:
                print("Error: No response from API")
                break
        
            status = response_data.get("status")
            print("Status:", status)

            if status == "waiting" or status == "active" or  status == "queued" or status == "generating":
                print("Still waiting... Checking again in 10 seconds.")
                time.sleep(10)
            else:
                print("Processing complete:\n", response_data)
                return response_data
   
        print("Timeout reached. Stopping.")
        return None     


if __name__ == "__main__":
    main()
```

{% endcode %}
{% endtab %}

{% tab title="JavaScript" %}
{% code overflow="wrap" %}

```javascript
const https = require("https");
const { URL } = require("url");

// Replace <YOUR_AIMLAPI_KEY> with your actual AI/ML API key
const apiKey = "<YOUR_AIMLAPI_KEY>";
const baseUrl = "https://api.aimlapi.com/v2";

// Creating and sending a video generation task to the server
function generateVideo(callback) {
  const data = JSON.stringify({
    model: "luma/ray-flash-2",
      prompt: "The camera moves down and gradually dives underwater and moves through a dark, moody world of greenish light and drifting plants. Giant white koi fish emerge from the shadows and turn curiously toward the camera as it passes, their scales shimmering faintly in the murky depths.",
      keyframes: {
        frame0: {
          type: "image",
          url: "https://raw.githubusercontent.com/aimlapi/api-docs/main/reference-files/landscape.jpg"
        },
        frame1: {
          type: "image",
          url: "https://cdn.aimlapi.com/assets/content/white-fish.png"
        }
      },
      duration: "5"
  });

  const url = new URL(`${baseUrl}/video/generations`);
  const options = {
    method: "POST",
    headers: {
      "Authorization": `Bearer ${apiKey}`,
      "Content-Type": "application/json",
      "Content-Length": Buffer.byteLength(data),
    },
  };

  const req = https.request(url, options, (res) => {
    let body = "";
    res.on("data", (chunk) => body += chunk);
    res.on("end", () => {
      if (res.statusCode >= 400) {
        console.error(`Error: ${res.statusCode} - ${body}`);
        callback(null);
      } else {
        const parsed = JSON.parse(body);
        callback(parsed);
      }
    });
  });

  req.on("error", (err) => console.error("Request error:", err));
  req.write(data);
  req.end();
}

// Requesting the result of the task from the server using the generation_id
function getVideo(genId, callback) {
  const url = new URL(`${baseUrl}/video/generations`);
  url.searchParams.append("generation_id", genId);

  const options = {
    method: "GET",
    headers: {
      "Authorization": `Bearer ${apiKey}`,
      "Content-Type": "application/json",
    },
  };

  const req = https.request(url, options, (res) => {
    let body = "";
    res.on("data", (chunk) => body += chunk);
    res.on("end", () => {
      const parsed = JSON.parse(body);
      callback(parsed);
    });
  });

  req.on("error", (err) => console.error("Request error:", err));
  req.end();
}

// Initiates video generation and checks the status every 10 seconds until completion or timeout
function main() {
  generateVideo((genResponse) => {
    if (!genResponse || !genResponse.id) {
      console.error("Failed to start generation");
      return;
    }

    const genId = genResponse.id;
    console.log("Gen_ID:", genId);

    const startTime = Date.now();
    const timeout = 600000;

    const checkStatus = () => {
      if (Date.now() - startTime > timeout) {
        console.log("Timeout reached. Stopping.");
        return;
      }

      getVideo(genId, (responseData) => {
        if (!responseData) {
          console.error("Error: No response from API");
          return;
        }

        const status = responseData.status;
        console.log("Status:", status);

        if (["waiting", "active", "queued", "generating"].includes(status)) {
          console.log("Still waiting... Checking again in 10 seconds.");
          setTimeout(checkStatus, 10000);
        } else {
          console.log("Processing complete:\n", responseData);
        }
      });
    };

    checkStatus();
  });
}

main();
```

{% endcode %}
{% endtab %}
{% endtabs %}

<details>

<summary>Response</summary>

{% code overflow="wrap" %}

```json5
Generation ID:   df551652-1bbe-4d38-9c99-d0ecb69db192:luma/ray-flash-2
Status: queued
Still waiting... Checking again in 10 seconds.
Status: generating
Still waiting... Checking again in 10 seconds.
Status: generating
Still waiting... Checking again in 10 seconds.
Status: generating
Still waiting... Checking again in 10 seconds.
Status: completed
Processing complete:\n {'id': 'df551652-1bbe-4d38-9c99-d0ecb69db192:luma/ray-flash-2', 'status': 'completed', 'video': {'url': 'https://cdn.aimlapi.com/luma/dream_machine/8523b741-f975-4a8b-84d0-05c51f1cbb04/f9cff453-d98f-4243-a419-164f7c228c38_result76b52833979928ee.mp4'}}
```

{% endcode %}

</details>

**Processing time**: \~ 1 min.

**Original** (1280x720, without sound):

{% embed url="<https://drive.google.com/file/d/1TpqoSn9bacE80o3Ib_zSySxR6GYZPyMf/view>" %}