Kling V2.1 - Image to Video

kling-v2-1-i2v

Advanced image-to-video generation with refined motion control and higher output stability.

API Notes

kling-v2-1-i2v does not support tail frame only.

kling-v2-1-i2v only supports both image and image_tail parameters when mode is pro.

kling-v2-1-i2v generates videos in std mode at 720p resolution with 24fps frame rate.

kling-v2-1-i2v generates videos in pro mode at 1080p resolution with 24fps frame rate.

Endpoints

POST /v1/queue/kling-v2-1-i2v # Create task

GET /v1/queue/kling-v2-1-i2v/requests/{request_id}/status # Check status

GET /v1/queue/kling-v2-1-i2v/requests/{request_id}/response # Get result

PUT /v1/queue/kling-v2-1-i2v/requests/{request_id}/cancel # Cancel task

Request parameters

curl --request 'POST' 'https://odirouter.ai/model/v1/queue/kling-v2-1-i2v' \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --location \
  --data-raw '{
  "image": "https://www.gstatic.com/webp/gallery/1.jpg",
  "prompt": "A cinematic drone shot over a misty mountain range at sunrise",
  "negative_prompt": "blurry, low quality, distorted",
  "cfg_scale": 0.5,
  "mode": "std"
}'

image string required

Reference image

Supports Base64 encoded image or image URL (ensure accessible)

Please note, if you use Base64, ensure all image data parameters use Base64 encoding format. Do not add any prefix such as data:image/png;base64, before the Base64 string. The correct format should be the Base64 encoded string directly

Image requirements:

Format: .jpg, .jpeg, .png

Size: Less than 10MB

Dimensions: Width and height at least 300px, aspect ratio between 1:2.5 and 2.5:1

prompt string

Video generation prompt (optional), maximum 2500 characters

duration string

Video duration in seconds

Options: 5, 10

Default: 5

mode string

Video generation mode

std: Standard mode, basic mode with high cost-effectiveness

pro: Expert mode (high quality), high performance mode with better video quality

Options: std, pro

Default: std

negative_prompt string

Negative text prompt, maximum 2500 characters

image_tail string

Reference image - tail frame control

Supports Base64 encoded image or image URL (ensure accessible)

Image requirements:

Format: .jpg, .jpeg, .png

Size: Less than 10MB

Dimensions: Width and height at least 300px

watermark_info array

Whether to generate results with watermarks simultaneously

Defined via the enabled parameter, specific format as follows:

"watermark_info": {

"enabled": boolean // true for generation, false for no generation

}

Custom watermarks are not currently supported

callback_url string

Callback notification address for this task result. If configured, the server will actively notify when the task status changes

external_task_id string

Custom task ID

User-defined task ID, will not overwrite the system-generated task ID when provided, but supports task query via this ID

Please note that uniqueness must be ensured under a single user

Response parameters

{
  "request_id": "task_01hxyz...",
  "response_url": "https://odirouter.ai/model/v1/queue/kling-v2-1-i2v/requests/task_01hxyz.../response",
  "status_url": "https://odirouter.ai/model/v1/queue/kling-v2-1-i2v/requests/task_01hxyz.../status",
  "cancel_url": "https://odirouter.ai/model/v1/queue/kling-v2-1-i2v/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