> ## 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.

# Seedance 1.5 Pro Super — Start-End Frame to Video

> Generate smooth transition videos between two keyframes using ByteDance+ Seedance 1.5 Pro Super

Generate a video that smoothly transitions from a start frame to an end frame using ByteDance+ Seedance 1.5 Pro Super. Supports up to 1080p resolution, 12-second durations, optional generated audio, and a fixed-camera mode.

| Property            | Value                                   |
| ------------------- | --------------------------------------- |
| **Provider**        | ByteDance+                              |
| **Model**           | Seedance 1.5 Pro Super                  |
| **Capability**      | Start-End Frame to Video                |
| **Base Cost**       | 15,000 micro-cents/second (\$0.015/sec) |
| **Processing Time** | \~300 seconds                           |

## Request Body

<ParamField body="model" type="string" required placeholder="bytedance-plus/seedance-1.5-pro-super/start-end-frame-to-video">
  Model slug. Use `bytedance-plus/seedance-1.5-pro-super/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">
      Optional text description of the motion or transition (max 5000 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="resolution" type="string">
      Output resolution. Default: `720p`. Options: `480p`, `720p`, `1080p`.
    </ParamField>

    <ParamField body="duration" type="string">
      Video duration in seconds. Default: `5`. Options: `4`, `5`, `6`, `7`, `8`, `9`, `10`, `11`, `12`.
    </ParamField>

    <ParamField body="aspect_ratio" type="string">
      Video aspect ratio. Default: `16:9`. Options: `21:9`, `16:9`, `4:3`, `1:1`, `3:4`, `9:16`.
    </ParamField>

    <ParamField body="generate_audio" type="boolean">
      Generate synchronized audio for the video. Default: `true`.
    </ParamField>

    <ParamField body="camera_fixed" type="boolean">
      Lock the camera position for a static shot. Default: `false`.
    </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:** 15,000 micro-cents per second (\$0.015/sec)

```
finalCost = baseCost × resolution × generate_audio × duration
```

| Factor             | Option   | Multiplier                    |
| ------------------ | -------- | ----------------------------- |
| **Resolution**     | `480p`   | 1x                            |
|                    | `720p`   | 1.8667x                       |
|                    | `1080p`  | 3.7333x                       |
| **Generate Audio** | `false`  | 1x                            |
|                    | `true`   | 2x                            |
| **Duration**       | `4`–`12` | matches value (e.g. `5` → 5x) |

<Tip>
  **Default cost:** 720p, audio on, 5 seconds = 15,000 × 1.8667 × 2 × 5 = **280,005 micro-cents (\$0.28)**
</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": "bytedance-plus/seedance-1.5-pro-super/start-end-frame-to-video",
      "input": {
        "prompt": "Smoothly transition from sunrise to sunset",
        "start_frame_url": "https://example.com/image.jpg",
        "end_frame_url": "https://example.com/image.jpg",
        "resolution": "720p",
        "duration": "5",
        "aspect_ratio": "16:9",
        "generate_audio": true
      }
    }'
  ```

  ```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": "bytedance-plus/seedance-1.5-pro-super/start-end-frame-to-video",
          "input": {
              "prompt": "Smoothly transition from sunrise to sunset",
              "start_frame_url": "https://example.com/image.jpg",
              "end_frame_url": "https://example.com/image.jpg",
              "resolution": "720p",
              "duration": "5",
              "aspect_ratio": "16:9",
              "generate_audio": True
          }
      }
  )

  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: "bytedance-plus/seedance-1.5-pro-super/start-end-frame-to-video",
      input: {
        prompt: "Smoothly transition from sunrise to sunset",
        start_frame_url: "https://example.com/image.jpg",
        end_frame_url: "https://example.com/image.jpg",
        resolution: "720p",
        duration: "5",
        aspect_ratio: "16:9",
        generate_audio: true
      }
    })
  });

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