curl --request POST \
  --url https://api.evolink.ai/v1/videos/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "gemini-omni-1.1-flash-reference-to-video",
  "prompt": "Keep the character appearance and camera motion from the references.",
  "image_urls": [
    "https://example.com/character.png",
    "https://example.com/scene.png"
  ],
  "quality": "720p",
  "aspect_ratio": "16:9",
  "duration": 3
}
'

{
  "created": 1757169743,
  "id": "task-unified-1757169743-7cvnl5zw",
  "model": "gemini-omni-1.1-flash-reference-to-video",
  "object": "video.generation.task",
  "progress": 0,
  "status": "processing",
  "task_info": {
    "can_cancel": false,
    "estimated_time": 60,
    "video_duration": 3
  },
  "type": "video",
  "usage": {
    "billing_rule": "per_token",
    "credits_reserved": 102.34,
    "user_group": "default"
  }
}

{
  "error": {
    "code": "invalid_request",
    "message": "Invalid request parameters",
    "type": "invalid_request_error"
  }
}

{
  "error": {
    "code": "unauthorized",
    "message": "Invalid or expired token",
    "type": "authentication_error"
  }
}

{
  "error": {
    "code": "insufficient_quota",
    "message": "Insufficient quota. Please top up your account.",
    "type": "insufficient_quota"
  }
}

{
  "error": {
    "code": "model_access_denied",
    "message": "Token does not have access to model: gemini-omni-1.1-flash-reference-to-video",
    "type": "invalid_request_error"
  }
}

{
  "error": {
    "code": "rate_limit_exceeded",
    "message": "Too many requests, please try again later",
    "type": "rate_limit_error"
  }
}

{
  "error": {
    "code": "internal_error",
    "message": "Internal server error",
    "type": "api_error"
  }
}

Gemini Omni 1.1 Flash

Gemini Omni 1.1 Flash Reference-to-Video

Generate a video with native audio from reference images, optional reference videos, and a text prompt
image_urls: Reference image URL array. Required; publicly documented maximum: 10 images. HTTP/HTTPS only.
video_urls: Optional reference video URLs, up to 3 directly reachable HTTP/HTTPS MP4 files, each no longer than 10 seconds.
quality: Output resolution: 360p, 720p, 1080p, or 4k. Default: 720p.
duration: Video duration in seconds. Integer from 3 to 10; default 3.
aspect_ratio: Aspect ratio: 16:9, 9:16, or auto; default auto.
The model generates synchronized native audio automatically.
Write negative requirements directly in prompt.
Asynchronous processing: query task status
Generated links remain valid for 24 hours; save them promptly.

POST

videos

generations

curl --request POST \
  --url https://api.evolink.ai/v1/videos/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "gemini-omni-1.1-flash-reference-to-video",
  "prompt": "Keep the character appearance and camera motion from the references.",
  "image_urls": [
    "https://example.com/character.png",
    "https://example.com/scene.png"
  ],
  "quality": "720p",
  "aspect_ratio": "16:9",
  "duration": 3
}
'

{
  "created": 1757169743,
  "id": "task-unified-1757169743-7cvnl5zw",
  "model": "gemini-omni-1.1-flash-reference-to-video",
  "object": "video.generation.task",
  "progress": 0,
  "status": "processing",
  "task_info": {
    "can_cancel": false,
    "estimated_time": 60,
    "video_duration": 3
  },
  "type": "video",
  "usage": {
    "billing_rule": "per_token",
    "credits_reserved": 102.34,
    "user_group": "default"
  }
}

{
  "error": {
    "code": "invalid_request",
    "message": "Invalid request parameters",
    "type": "invalid_request_error"
  }
}

{
  "error": {
    "code": "unauthorized",
    "message": "Invalid or expired token",
    "type": "authentication_error"
  }
}

{
  "error": {
    "code": "insufficient_quota",
    "message": "Insufficient quota. Please top up your account.",
    "type": "insufficient_quota"
  }
}

{
  "error": {
    "code": "model_access_denied",
    "message": "Token does not have access to model: gemini-omni-1.1-flash-reference-to-video",
    "type": "invalid_request_error"
  }
}

{
  "error": {
    "code": "rate_limit_exceeded",
    "message": "Too many requests, please try again later",
    "type": "rate_limit_error"
  }
}

{
  "error": {
    "code": "internal_error",
    "message": "Internal server error",
    "type": "api_error"
  }
}

Authorizations

Authorization

string

header

required

##All endpoints require authentication using a Bearer Token##

Get your API Key:

Visit the API Key management page to obtain your API Key

Add it to the request header:

Authorization: Bearer YOUR_API_KEY

Body

application/json

model

enum<string>

default:gemini-omni-1.1-flash-reference-to-video

required

Model name, fixed to gemini-omni-1.1-flash-reference-to-video

Available options:

gemini-omni-1.1-flash-reference-to-video

Example:

"gemini-omni-1.1-flash-reference-to-video"

prompt

string

required

Text prompt describing how the reference subjects, style, and motion should appear in the output.

Example:

"Keep the character appearance and camera motion from the references."

image_urls

string<uri>[]

required

Reference image URL array. Required; supports 1 to 10 images for constraining subjects, style, or elements.

Input requirements:

HTTP/HTTPS image URLs only
Supported formats: png, jpeg, webp

Required array length: 1 - 10 elements

Example:

[
  "https://example.com/character.png",
  "https://example.com/scene.png"
]

video_urls

string<uri>[]

Optional reference video array; up to 3 videos.

Videos can provide motion, camera movement, or style references and may be used together with image_urls.

Input requirements:

HTTP/HTTPS video URLs only
Format: mp4
Each video must be no longer than 10 seconds

Billing: Every reference video contributes input tokens.

Required array length: 1 - 3 elements

Example:

["https://example.com/reference.mp4"]

quality

enum<string>

default:720p

Video resolution; default 720p.

Supported values:

360p: landscape 640×360 / portrait 360×640
720p: landscape 1280×720 / portrait 720×1280; default
1080p: landscape 1920×1080 / portrait 1080×1920
4k: landscape 3840×2160 / portrait 2160×3840

Orientation is controlled by aspect_ratio: 16:9 produces landscape and 9:16 produces portrait.

Billing: Video output is billed by output tokens, which scale linearly with resolution. Relative to 720p, 360p uses about one third, 1080p about 1.5×, and 4k about 3×. Actual charges are based on generated usage.

Available options:

360p,

720p,

1080p,

4k

Example:

"720p"

duration

integer

default:3

Video duration in seconds; default 3.

Notes:

Accepts any integer from 3 to 10
Duration directly affects billing

Required range: 3 <= x <= 10

Example:

3

aspect_ratio

enum<string>

default:auto

Aspect ratio: 16:9, 9:16, or auto; default auto.

Available options:

16:9,

9:16,

auto

Example:

"auto"

callback_url

string<uri>

HTTPS callback URL to notify when the task completes

Callback timing:

Triggered when the task completes (completed), fails (failed), or is cancelled (cancelled)
Sent after billing is confirmed

Security restrictions:

HTTPS protocol only
Callbacks to internal IP addresses are forbidden (127.0.0.1, 10.x.x.x, 172.16-31.x.x, 192.168.x.x, etc.)
URL length must not exceed 2048 characters

Callback mechanism:

Timeout: 10 seconds
Up to 3 retries on failure (retried 1s / 2s / 4s after each failure respectively)
The callback body format matches the response of the task query endpoint
A 2xx status code from the callback URL is treated as success; other status codes trigger a retry

Example:

"https://your-domain.com/webhooks/video-task-completed"

Response

Video task created successfully

created

integer

Task creation timestamp

Example:

1757169743

string

Task ID

Example:

"task-unified-1757169743-7cvnl5zw"

model

string

The model name actually used

Example:

"gemini-omni-1.1-flash-reference-to-video"

object

enum<string>

The specific type of the task

Available options:

video.generation.task

progress

integer

Task progress percentage (0-100)

Required range: 0 <= x <= 100

Example:

0

status

enum<string>

Task status. The create endpoint returns processing.

Available options:

pending,

processing,

completed,

failed

Example:

"processing"

task_info

object

Detailed video task information

Show child attributes

type

enum<string>

The output type of the task

Available options:

text,

image,

audio,

video

Example:

"video"

usage

object

Usage and billing information

Show child attributes

Image Series

Video Series

Audio Series

Text Series

Account Management

Task Management

File Management

Gemini Omni 1.1 Flash Reference-to-Video

Authorizations

Body

Response