API reference

video extension

POST/kling/v1/videos/video-extend

Body Parametersapplication/json

callback_url string

Callback URL invoked on task completion

cfg_scale number

Prompt reference strength range [0,1]; higher = stronger

negative_prompt string

negative text prompt

prompt* string

Positive text prompt max 2500 characters

video_id* string

Video ID for extend (text/image/video); original video ≤3 minutes

200 application/json

response-200 object

400 Bad request or validation failed application/json

response-400 object

properties

error* object

401 Missing or invalid API Key application/json

response-401 object

Request Body Example

2"callback_url": "",

3"cfg_scale": 0.5,

4"negative_prompt": "",

5"prompt": "延长动画效果",

6"video_id": "828006748715380777"

Code Sample cURL

1curl -X POST "https://api.digislash.com/kling/v1/videos/video-extend" \

2-H "Authorization: Bearer <API Key>" \

3-H "Content-Type: application/json" \

4-d '{

5"callback_url": "",

6"cfg_scale": 0.5,

7"negative_prompt": "",

8"prompt": "延长动画效果",

9"video_id": "828006748715380777"

10}'

Response

1▼{

2"code": 0,

3▼"data": {

4"task_id": "task_example_001"

5},

6"message": "success"