Kirin V2.1 Master - Image to Video

API Notes

kirin_v2_1_master_i2v generates videos at 1080p resolution with 24fps frame rate.

Authentication

authorization string required

All APIs require authentication via Bearer Token.

Get API Key:

Visit API Key Management Page to get your API Key.

Usage:

Add to request header:

Authorization: Bearer YOUR_API_KEY

Parameters

model string required

Model ID to use for the request

Options: kirin_v2_1_master_i2v

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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

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prompt string

Positive text prompt, maximum 2500 characters

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duration string

Video duration in seconds

Options: 5, 10

Default: 5

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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

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callback_url string

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

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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

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Polling

Since video generation takes time, you need to poll the task status after creation

The initial response returns the task ID and initial status. The actual generation results must be obtained through polling the task status endpoint

Response Format

error object

Error information. Only present when status is failed.

code string

Error code

error_message string

Detailed error message

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output array

Generation results. Only present when status is completed.

content array

List of generated content

type string

Resource type, e.g., video, image

url string

Generated content URL

duration number

Video duration

jobId string

Remote job ID

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usage object

Usage statistics. Only present when status is completed.

cost string

Total cost in USD

discount number

Discount amount

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metadata object

Metadata information

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Error Codes

Error Code	Description
0	No error
8002009001	Image missing
8002009002	Image format invalid
8002009003	Prompt length invalid
8002009004	Duration invalid
8002009005	Aspect ratio invalid
8002009006	JWT authentication failed
8002009098	Generation process failed
8002009099	Provider unavailable