---
title: "Seedance 2 5 Intl Video Extend"
method: POST
path: "/api/v1/seedance-2.5-intl-video-extend"
tags: ["Video: Edit & Effects"]
---

# Seedance 2 5 Intl Video Extend

`POST /api/v1/seedance-2.5-intl-video-extend`

## Request

- Base URL: `https://api.muapi.ai`
- URL: `https://api.muapi.ai/api/v1/seedance-2.5-intl-video-extend`
- Auth: one of:
  - API key in header `x-api-key`
  - OAuth 2 (client credentials, token URL `https://api.muapi.ai/oauth/token`)

## Query parameters

- `webhook` string
- `team_id` integer, nullable

## Headers

- `x-api-key` string
- `x-embed-code` string, nullable
- `x-agent-embed-code` string, nullable
- `x-whitelabel-studio` string, nullable
- `authorization` string, nullable

## Request body

- Seedance25VideoExtendRequest
  - `webhook_url` string, uri, nullable
  - `duration` integer: Video duration in seconds, from 4 to 30.
  - `aspect_ratio` 'adaptive' | '16:9' | '9:16' | '1:1' | '4:3' | '3:4' | '21:9' | '9:21'
  - `seed` integer, nullable: Random seed for reproducible generation. Use -1 for random.
  - `high_bitrate` boolean
  - `prompt` string, required: Desired cinematic continuation — action, camera movement, lighting, mood. Automatically prefixed with "Continue the video forward."
  - `video_url` string, uri, required: URL of the video to extend. Generation continues from its last frame.
  - `last_image` string, uri, nullable: Optional target frame URL. When set, the continuation interpolates from the input video's final frame toward this image.
  - `generate_audio` boolean: Whether to generate synchronized audio for the new segment.
  - `resolution` '480p' | '720p' | '1080p' | '4k': Output resolution. Price scales with resolution — see the model's pricing table.

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/muapi/apis/muapi-api.md) · [All operations](https://skmtc.dev/muapi/apis/muapi-api/llms.txt) · [OpenAPI document](https://skmtc.dev/muapi/apis/muapi-api/revisions/e4b7374381e5?raw)