> ## Documentation Index
> Fetch the complete documentation index at: https://developer.pixelbyte.app/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Kling 2.6 — Start-End Frame to Video

> Generate videos that interpolate between a start and end frame using Kling 2.6

Generate a smooth video that transitions from a start frame to an end frame with Kling 2.6. Ideal for controlled keyframe animation, morphing transitions, and creative storytelling.

| Property            | Value                                  |
| ------------------- | -------------------------------------- |
| **Provider**        | Kling                                  |
| **Model**           | Kling 2.6                              |
| **Capability**      | Start-End Frame to Video               |
| **Base Cost**       | 60,000 micro-cents/second (\$0.06/sec) |
| **Processing Time** | \~240 seconds                          |

## Request Body

<ParamField body="model" type="string" required placeholder="kling/kling-i2v-frames-v26/start-end-frame-to-video">
  Model slug. Use `kling/kling-i2v-frames-v26/start-end-frame-to-video`.
</ParamField>

<ParamField body="input" type="object" required>
  Input parameters for start-end frame video generation.

  <Expandable title="properties" defaultOpen>
    <ParamField body="prompt" type="string" required>
      Text description guiding the transition (max 2500 characters).
    </ParamField>

    <ParamField body="start_frame_url" type="string" required>
      URL of the start frame image.
    </ParamField>

    <ParamField body="end_frame_url" type="string" required>
      URL of the end frame image.
    </ParamField>

    <ParamField body="quality" type="string">
      Generation quality. Default: `std`. Options: `std`, `pro`.
    </ParamField>

    <ParamField body="duration" type="string">
      Video duration in seconds. Default: `5`. Options: `5`, `10`.
    </ParamField>

    <ParamField body="aspect_ratio" type="string">
      Video aspect ratio. Default: `16:9`. Options: `16:9`, `9:16`, `1:1`.
    </ParamField>
  </Expandable>
</ParamField>

<ParamField body="webhookUrl" type="string">
  HTTPS URL to receive a webhook notification when the job completes or fails.
</ParamField>

## Pricing

**Base cost:** 60,000 micro-cents per second (\$0.06/sec)

```
finalCost = baseCost × quality × duration
```

| Factor       | Option | Multiplier |
| ------------ | ------ | ---------- |
| **Quality**  | `std`  | 1x         |
|              | `pro`  | 1.5x       |
| **Duration** | `5`    | 5x         |
|              | `10`   | 10x        |

<Tip>
  **Default cost:** std quality, 5 seconds = 60,000 × 1 × 5 = **300,000 micro-cents (\$0.30)**
</Tip>

## Response

<ResponseField name="jobId" type="string">
  Unique identifier for the submitted job.
</ResponseField>

<ResponseField name="status" type="string">
  Initial job status. Always `"pending"` on successful submission.
</ResponseField>

<ResponseField name="estimatedCompletionTime" type="string">
  ISO 8601 timestamp of the estimated completion time.
</ResponseField>

<ResponseField name="costMicroCents" type="number">
  The cost of the job in micro-cents.
</ResponseField>

## Code Examples

<CodeGroup>
  ```bash cURL theme={null}
  curl -X POST https://api.muvi.video/v1/jobs/submit \
    -H "Authorization: Bearer $PIXELBYTE_API_KEY" \
    -H "Content-Type: application/json" \
    -d '{
      "model": "kling/kling-i2v-frames-v26/start-end-frame-to-video",
      "input": {
        "prompt": "A snowy mountain peak slowly transforms into a green spring valley",
        "start_frame_url": "https://example.com/image.jpg",
        "end_frame_url": "https://example.com/image.jpg",
        "quality": "std",
        "duration": "5",
        "aspect_ratio": "16:9"
      }
    }'
  ```

  ```python Python theme={null}
  import requests

  response = requests.post(
      "https://api.muvi.video/v1/jobs/submit",
      headers={
          "Authorization": "Bearer YOUR_API_KEY",
          "Content-Type": "application/json"
      },
      json={
          "model": "kling/kling-i2v-frames-v26/start-end-frame-to-video",
          "input": {
              "prompt": "A snowy mountain peak slowly transforms into a green spring valley",
              "start_frame_url": "https://example.com/image.jpg",
              "end_frame_url": "https://example.com/image.jpg",
              "quality": "std",
              "duration": "5",
              "aspect_ratio": "16:9"
          }
      }
  )

  data = response.json()
  print(data)
  ```

  ```javascript JavaScript theme={null}
  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: "kling/kling-i2v-frames-v26/start-end-frame-to-video",
      input: {
        prompt: "A snowy mountain peak slowly transforms into a green spring valley",
        start_frame_url: "https://example.com/image.jpg",
        end_frame_url: "https://example.com/image.jpg",
        quality: "std",
        duration: "5",
        aspect_ratio: "16:9"
      }
    })
  });

  const data = await response.json();
  console.log(data);
  ```
</CodeGroup>