# Pixverse v6 Video-Extend — Atlas Cloud API

> Pixverse v6 Video Extend model. High-quality video generation from image prompts.

This is the machine-readable API reference for **Pixverse v6 Video-Extend** on Atlas Cloud,
a unified API platform for 400+ AI models across text, image, video, audio and 3D.

- **Model ID**: `pixverse/v6/video-extend`
- **Built by**: PIXVERSE
- **Modality**: Video
- **Model page**: https://www.atlascloud.ai/models/pixverse/v6/video-extend
- **API key**: https://www.atlascloud.ai/console/api-keys
- **Docs**: https://www.atlascloud.ai/docs

## Pricing on Atlas Cloud

- $0.025 per second of generated video
- Pay-as-you-go. No minimum spend, no subscription required.

> **These are the authoritative Atlas Cloud rates for this model.** Any price that
> appears in the vendor description further down refers to a different platform or
> a different model variant and does not apply here.

## Use this model from an AI agent

Atlas Cloud ships three first-party integration surfaces. All three authenticate
with the same API key via the `ATLASCLOUD_API_KEY` environment variable.

### MCP server

The official MCP server (`atlascloud-mcp`) exposes this model to any
MCP-compatible host — Claude Code, OpenAI Codex, Cursor, Gemini CLI, Goose,
Claude Desktop. One-line install:

```bash
# Claude Code
claude mcp add atlascloud -- npx -y atlascloud-mcp

# OpenAI Codex CLI
codex mcp add atlascloud -- npx -y atlascloud-mcp

# Gemini CLI
gemini mcp add atlascloud -- npx -y atlascloud-mcp

export ATLASCLOUD_API_KEY="your-api-key"
```

Then ask in plain English; the agent calls `atlas_generate_video` with `model: "pixverse/v6/video-extend"`.
The server fetches each model's schema and validates parameters before submitting,
so invalid requests fail fast without spending credits.

MCP docs: https://www.atlascloud.ai/docs/mcp-server

### Agent Skills

`atlas-cloud-skills` is a portable skill package (API reference, code templates in
Python / Node.js / cURL, model IDs with pricing) for Claude Code, Cursor, Codex and
12+ other agents:

```bash
npx skills add AtlasCloudAI/atlas-cloud-skills
export ATLASCLOUD_API_KEY="your-api-key"
```

Skills docs: https://www.atlascloud.ai/docs/skills

### CLI

The `atlas` binary runs Atlas Cloud from a terminal or CI script. Async media jobs
are polled and downloaded automatically (use `--no-download` when a script only
needs the output URLs):

```bash
# Install (Homebrew, npm, or shell installer)
brew install AtlasCloudAI/tap/atlascloud
# npm install -g atlascloud-cli
# curl -fsSL https://raw.githubusercontent.com/AtlasCloudAI/cli/main/install.sh | sh

atlas auth login
atlas generate video pixverse/v6/video-extend -p "Your prompt here"
```

CLI docs: https://www.atlascloud.ai/docs/cli

## HTTP API reference

- **Submit endpoint (POST)**: `https://api.atlascloud.ai/api/v1/model/generateVideo` — start an async generation; returns a `prediction_id`
- **Poll endpoint (GET)**: `https://api.atlascloud.ai/api/v1/model/prediction/{prediction_id}` — poll this until the prediction finishes
- **Model ID**: `pixverse/v6/video-extend`


## API Information

This model can be used via our HTTP API or more conveniently via our client libraries.
See the input and output schema below, as well as the usage examples.


### Input Schema

The API accepts the following input parameters:

- **`model`** (`string`, _required_):
  model name
  - Default: `"pixverse/v6/video-extend"`

- **`prompt`** (`string`, _required_):
  The positive prompt for the generation.

- **`video`** (`string`, _required_):
  The URL of the source video to be extended. Required if extending an existing video.

- **`duration`** (`integer`, _required_):
  The duration of the generated media in seconds (1-15).
  - Default: `5`
  - Options: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15

- **`quality`** (`string`, _required_):
  The resolution of the generated video.
  - Default: `"720p"`
  - Options: "360p", "540p", "720p", "1080p"

- **`seed`** (`integer`, _optional_):
  Random seed for reproducibility.



**Required Parameters Example**:

```json
{
  "model": "pixverse/v6/video-extend",
  "prompt": "",
  "video": "",
  "duration": 5,
  "quality": "720p"
}
```


**Full Example**:

```json
{
  "model": "pixverse/v6/video-extend",
  "prompt": "",
  "video": "",
  "duration": 5,
  "quality": "720p",
  "seed": 0
}
```


### Output Schema

The API returns the following output format:


- **`created_at`** (`string`, _optional_):
  ISO timestamp of when the request was created.

- **`id`** (`string`, _optional_):
  Unique identifier for the prediction.

- **`model`** (`string`, _optional_):
  Model ID used for the prediction.

- **`outputs`** (`array[string]`, _optional_):
  Array of URLs to the generated content.

- **`status`** (`string`, _optional_):
  Status of the task: created, processing, completed, or failed.

- **`urls`** (`object`, _optional_):
  Object containing related API endpoints.



**Example Response**:

```json
{
  "created_at": "",
  "id": "",
  "model": "",
  "outputs": [
    ""
  ],
  "status": "",
  "urls": {}
}
```


## Usage Examples

### cURL

```bash
# Step 1: Start generation (async)
curl -X POST "https://api.atlascloud.ai/api/v1/model/generateVideo" \
  -H "Authorization: Bearer $ATLASCLOUD_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "pixverse/v6/video-extend",
  "prompt": "",
  "video": "",
  "duration": 5,
  "quality": "720p",
  "seed": 0
}'

# Response will contain: {"code": 200, "data": {"id": "prediction_id", "status": "processing"}}

# Step 2: Poll for result (replace {prediction_id} with the id returned above)
curl -X GET "https://api.atlascloud.ai/api/v1/model/prediction/{prediction_id}" \
  -H "Authorization: Bearer $ATLASCLOUD_API_KEY"

# Keep polling until status is "completed", "succeeded" or "failed"
# When completed, outputs will contain the generated content URL(s)
```

## Additional Resources

### Documentation

- [Model Playground](https://www.atlascloud.ai/models/pixverse/v6/video-extend)

## About this model

_Vendor-supplied description. Any pricing or endpoint mentioned below refers to_
_other platforms — use the Atlas Cloud values above._

#### PixVerse V6 Video Extend

**PixVerse V6 Video Extend** lets you seamlessly extend any existing video beyond its original length. Upload a source video, describe how the scene should continue, and V6 generates a smooth, coherent extension that picks up naturally from the last frame.

#### Why Choose This?

-   **Seamless continuation** Extend any video with natural motion that flows from the original ending.

-   **Prompt-guided extension** Describe exactly how the scene should evolve after the cut point.

-   **High resolution output** Extend videos in 360p, 540p, 720p, or 1080p quality.

-   **Flexible duration** Add 1 to 15 seconds of new content to your video.

-   **Reproducible results** Use a seed value to reproduce or iterate on extensions.

#### Parameters

| Parameter | Required | Description |
| --- | --- | --- |
| prompt | Yes | Text description of how the scene should continue |
| video | Yes | URL of the source video to extend |
| model | Yes | Model name (default: pixverse/v6/video-extend) |
| duration | Yes | Length of the extension in seconds (1-15, default: 5) |
| quality | Yes | Output resolution: 360p, 540p, 720p (default), 1080p |
| seed | No | Random seed for reproducibility |

#### How to Use

1.  **Prepare your source video** — upload the video and obtain a public URL, or use a previously generated PixVerse video.
2.  **Write your prompt** — describe the motion, action, or scene development after the current ending.
3.  **Set quality** — match the resolution of your source video for consistent output.
4.  **Set duration** — choose how many seconds to add (1-15).
6.  **Set seed (optional)** — fix a seed to reproduce the same extension result.
7.  **Run** — submit and download your extended video.

#### Best Use Cases

_(Description truncated. Full text on the model page.)_

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Atlas Cloud — one API for 400+ AI models. Model page: https://www.atlascloud.ai/models/pixverse/v6/video-extend · Docs: https://www.atlascloud.ai/docs