Kling V1.6 - Image to Video

kling-v1-6-i2v

Improved image-to-video generation with smoother motion transitions and better visual stability.

API Notes

kling-v1-6-i2v only supports first and last frame or only last frame (image + image_tail or image_tail only) when mode is pro

kling-v1-6-i2v generates videos at 720p resolution with 30fps frame rate in std mode

kling-v1-6-i2v generates videos at 1080p resolution with 30fps frame rate in pro mode

Endpoints

POST /v1/queue/kling-v1-6-i2v # Create task

GET /v1/queue/kling-v1-6-i2v/requests/{request_id}/status # Check status

GET /v1/queue/kling-v1-6-i2v/requests/{request_id}/response # Get result

PUT /v1/queue/kling-v1-6-i2v/requests/{request_id}/cancel # Cancel task

Request parameters

curl --request 'POST' 'https://odirouter.ai/model/v1/queue/kling-v1-6-i2v' \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --location \
  --data-raw '{
  "image": "https://www.gstatic.com/webp/gallery/3.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)

Note: If using 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. Please only provide the Base64 encoded string portion so the system can correctly process and parse your data

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

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

prompt string

Video generation prompt, length between 1 - 2500 characters

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, max 2500 characters

cfg_scale number

Freedom of generated video; larger value means less model freedom, stronger correlation with user input prompt

Range: 0 - 1

Default: 0.5

duration string

Generated video duration in seconds

Options: 5, 10

Default: 5

watermark_info array

Whether to generate results with watermark simultaneously

Defined by enabled parameter, specific array 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 task status changes

external_task_id string

Custom task ID

User-defined task ID. Input will not overwrite system-generated task ID, but supports task query through this ID

Please note, must ensure uniqueness under a single user

callback string

Callback URL

Response parameters

{
  "request_id": "task_01hxyz...",
  "response_url": "https://odirouter.ai/model/v1/queue/kling-v1-6-i2v/requests/task_01hxyz.../response",
  "status_url": "https://odirouter.ai/model/v1/queue/kling-v1-6-i2v/requests/task_01hxyz.../status",
  "cancel_url": "https://odirouter.ai/model/v1/queue/kling-v1-6-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