Kling Video Extend

kling-video-extend

Video duration extension interface, supporting forward and backward extension.

Endpoints

POST /v1/queue/kling-video-extend # Create task

GET /v1/queue/kling-video-extend/requests/{request_id}/status # Check status

GET /v1/queue/kling-video-extend/requests/{request_id}/response # Get result

PUT /v1/queue/kling-video-extend/requests/{request_id}/cancel # Cancel task

Request parameters

curl --request 'POST' 'https://odirouter.ai/model/v1/queue/kling-video-extend' \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --location \
  --data-raw '{
  "video_id": "",
  "prompt": "A beautiful sunset scene",
  "negative_prompt": "blurry, low quality",
  "cfg_scale": 0.5,
  "callback_url": "https://example.com/webhook"
}'

video_id string required

Video ID

Supports the ID of videos generated through text, image, and video extension (original video cannot exceed 3 minutes)

prompt string

Positive text prompt, max 2500 characters

negative_prompt string

Negative text prompt, max 2500 characters

cfg_scale float

Prompt reference strength. Higher values mean stronger reference

Range: 0 - 1

Default: 0.5

callback_url string

Callback notification URL for task results. If configured, the server will actively notify when task status changes

external_task_id string

Custom task ID

User-defined task ID that will not override the system-generated task ID but can be used for task queries

Response parameters

{
  "request_id": "task_01hxyz...",
  "response_url": "https://odirouter.ai/model/v1/queue/kling-video-extend/requests/task_01hxyz.../response",
  "status_url": "https://odirouter.ai/model/v1/queue/kling-video-extend/requests/task_01hxyz.../status",
  "cancel_url": "https://odirouter.ai/model/v1/queue/kling-video-extend/requests/task_01hxyz.../cancel",
  "queue_position": 0
}

Field	Type	Description
`request_id`	string	Task ID used for all follow-up operations.
`response_url`	string	URL to fetch the final result.
`status_url`	string	URL to query task status.
`cancel_url`	string	URL to cancel the task.
`queue_position`	int	Current queue position.

Follow-up operations

Check status

Get result

Cancel task

Error handling