Bytedance Seedance 2.0 Mini Video Extend

Bytedance Seedance 2.0 Mini Video Extend

Playground

Seedance 2.0 Mini Video Extend is ByteDance’s faster, lower-cost video extension model for cinematic multi-shot continuation. It extends existing videos into seamless narrative sequences with AI camera control, consistent characters, motion continuity, 480P / 720P / 1080P / 4K output, 4-15s duration, and flexible aspect ratios. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

Features

ByteDance Seedance 2.0 Mini Video Extend continues an existing video by generating a new segment from the input video’s last frame. Upload a source video, describe the cinematic continuation, optionally provide a target last frame, and generate an extended video segment with synchronized native audio.

• Need to generate from text instead? Try ByteDance Seedance 2.0 Mini Text-to-Video.
• Need to generate from a start image instead? Try ByteDance Seedance 2.0 Mini Image-to-Video.

Why Choose This?

• Video continuation
  Extend an existing video by generating a new segment that continues from the input video’s last frame.

• Prompt-guided extension
  Describe the action, camera movement, lighting, and mood for the new segment.

• Optional target last frame
  Provide last_image when you want the new segment to interpolate toward a specific ending frame.

• Native audio generation
  Generate synchronized audio together with the extended video segment using generate_audio.

• Flexible resolution options
  Choose 480p, 720p, 1080p, or 4k depending on your quality and cost needs.

• Web search option
  Enable enable_web_search when the continuation needs real-time information.

Parameters

How to Use

1. Write your prompt — Describe how the video should continue, including subject action, camera movement, lighting, and mood.
2. Upload the source video — Provide the input video that should be extended.
3. Add a last image optional — Use last_image when you want to guide the ending frame of the new segment.
4. Choose resolution — Select 480p, 720p, 1080p, or 4k.
5. Set duration — Choose the length of the new segment between 4 and 15 seconds.
6. Configure audio optional — Keep generate_audio enabled for synchronized native audio, or disable it if audio is not needed.
7. Submit — Generate the extended video segment.

Example Prompt

Continue the scene with a slow forward camera movement, the character walking deeper into the neon-lit street, soft rain falling, reflections glowing on the pavement, cinematic lighting, calm but mysterious atmosphere.

Pricing

Per 5 Seconds

Per Second

Example Costs

Best Use Cases

• Video extension — Continue an existing clip with a newly generated segment.
• Scene continuation — Extend character action, camera movement, lighting, and atmosphere from the source video.
• Target-frame continuation — Use last_image to guide the ending direction of the new segment.
• Cinematic short clips — Generate continued video segments with synchronized native audio.
• Creative prototyping — Test alternate continuations from the same source video.

Pro Tips

• Use a source video with a clear ending frame.
• Keep the prompt focused on what should happen next.
• Use last_image when the final frame or ending direction matters.
• Describe visible motion, camera behavior, lighting, and mood.
• Use 480p for quick testing, 720p for standard output, 1080p for higher-resolution results, and 4k for maximum-resolution output.
• Keep generate_audio enabled when you want the extended segment to include synchronized native audio.

Related Models

• ByteDance Seedance 2.0 Mini Text-to-Video — Generate video directly from text prompts.
• ByteDance Seedance 2.0 Mini Image-to-Video — Generate video from a start image and prompt.

## Authentication

For authentication details, please refer to the [Authentication Guide](/api-authentication).

## API Endpoints

### Submit Task & Query Result

<ApiTabs submitUrl={model.submitUrl} resultUrl={model.resultUrl} payload={model.defaultValues} />

## Parameters

### Task Submission Parameters

#### Request Parameters

<RequestParams params={model.params} />

#### Response Parameters

<SubmitResponse />

#### Result Request Parameters

| Parameter | Type | Required | Default | Description |
|-----------|------|----------|---------|-------------|
| id | string | Yes | - | Task ID |

#### Result Response Parameters

| Parameter | Type | Description |
|-----------|------|-------------|
| code | integer | HTTP status code (e.g., 200 for success) |
| message | string | Status message (e.g., "success") |
| data | object | The prediction data object containing all details |
| data.id | string | Unique identifier for the prediction |
| data.model | string | Model ID used for the prediction |
| data.outputs | array&lt;string \| object&gt; | Array of generated outputs (empty when status is not completed). Items are usually URL strings, but may be text strings or structured result objects, depending on the model. |
| data.urls | object | Object containing related API endpoints |
| data.urls.get | string | URL to poll for the prediction result |
| data.status | string | Status: `created`, `processing`, `completed`, or `failed` |
| data.created_at | string | ISO timestamp of when the request was created |
| data.error | string | Error message (empty if no error occurred) |
| data.timings | object | Object containing timing details |
| data.timings.inference | integer | Inference time in milliseconds |