> ## Documentation Index
> Fetch the complete documentation index at: https://apidoc.deerapi.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Kling Extend Video

> Use DeerAPI to call the Kling Extend Video endpoint with request details, response details, examples, and an OpenAPI playground.

## Overview

Use this endpoint to call the Kling Extend Video workflow through DeerAPI. The API reference on this page shows the request schema, response schema, authentication requirements, and runnable examples for the configured endpoint.

## Before you start

Use the DeerAPI base URL and pass your API Key in the `Authorization` header:

```text theme={null}
https://api.deerapi.com
```

```text theme={null}
Authorization: Bearer $DEERAPI_KEY
```

## Model selection

Choose a current model ID from the [live pricing page](https://api.deerapi.com/pricing). Model availability changes over time, so avoid copying a model ID from an old project without checking the live list first.

## Implementation notes

* Use the OpenAPI playground for the exact request fields accepted by this endpoint.
* Keep API Keys on the server side when you build production applications.
* Log the request ID from failed calls so support can investigate the request.
* Retry `429`, `500`, and `503` responses with exponential backoff.


## OpenAPI

````yaml /api/openapi/video/kling/post-extend-video.openapi.json POST /kling/v1/videos/video-extend
openapi: 3.1.0
info:
  title: DeerAPI Kling Video Extension
  description: Use this field according to the endpoint schema.
  version: 1.0.0
servers:
  - url: https://api.deerapi.com
security:
  - bearerAuth: []
paths:
  /kling/v1/videos/video-extend:
    post:
      summary: DeerAPI Kling Video Extension
      description: Use this field according to the endpoint schema.
      operationId: createKlingVideoExtend
      requestBody:
        description: Use this field according to the endpoint schema.
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
                - video_id
              properties:
                video_id:
                  type: string
                  description: video_id
                  default: example
                prompt:
                  type: string
                callback_url:
                  type: string
              default:
                video_id: example
              examples:
                default:
                  summary: DeerAPI Kling Video Extension
                  value:
                    video_id: video_xxx
                    prompt: >-
                      A cinematic shot of a modern glass workspace at sunrise
                      with smooth camera movement.
                    callback_url: https://example.com/kling/callback
            example:
              video_id: example
            examples:
              Default:
                summary: Default request
                value:
                  video_id: example
      responses:
        '200':
          description: Use this field according to the endpoint schema.
          content:
            application/json:
              schema:
                type: object
                required:
                  - code
                  - message
                  - request_id
                  - data
                properties:
                  code:
                    type: integer
                    description: Use this field according to the endpoint schema.
                  message:
                    type: string
                    description: Use this field according to the endpoint schema.
                  request_id:
                    type: string
                    description: Use this field according to the endpoint schema.
                  data:
                    type: object
                    description: Use this field according to the endpoint schema.
                    required:
                      - task_id
                      - task_status
                      - created_at
                      - updated_at
                    properties:
                      task_id:
                        type: string
                        description: Use this field according to the endpoint schema.
                      task_status:
                        type: string
                        description: Use this field according to the endpoint schema.
                      created_at:
                        type: integer
                        description: Use this field according to the endpoint schema.
                      updated_at:
                        type: integer
                        description: Use this field according to the endpoint schema.
      x-codeSamples:
        - lang: Shell
          label: cURL
          source: |
            curl https://api.deerapi.com/kling/v1/videos/video-extend \
              -H "Content-Type: application/json" \
              -H "Authorization: Bearer $DEERAPI_KEY" \
              -d '{
                "video_id": "example"
              }'
        - lang: Python
          label: requests
          source: |
            import os
            import requests

            url = "https://api.deerapi.com/kling/v1/videos/video-extend"
            headers = {
                "Authorization": "Bearer " + os.environ["DEERAPI_KEY"],
                "Content-Type": "application/json",
            }
            payload = {
              "video_id": "example"
            }

            response = requests.post(url, headers=headers, json=payload)
            print(response.json())
        - lang: JavaScript
          label: fetch
          source: >
            const response = await
            fetch("https://api.deerapi.com/kling/v1/videos/video-extend", {
              method: "POST",
              headers: {
                Authorization: `Bearer ${process.env.DEERAPI_KEY}`,
                "Content-Type": "application/json",
              },
              body: JSON.stringify({
                "video_id": "example"
              }),
            });


            console.log(await response.json());
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: Use a DeerAPI API Key as a Bearer token.

````