Hailuo 02 FL2V

Hailuo 02 FL2V generates dynamic videos between user-defined start and end frames, mastering extreme physics, transitions, and reverse story generation.

POST /hailuo-02-fl2v/async

cURL

basic

curl --request POST \
  --url https://api.modellix.ai/api/v1/minimax/hailuo-02-fl2v/async \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "last_frame_image": "https://example.com/last-frame.jpg"
}
'

200

Example

{
  "code": 0,
  "message": "success",
  "data": {
    "status": "pending",
    "task_id": "task-fl2v-abc123",
    "model_id": "model-123",
    "get_result": {
      "method": "GET",
      "url": "https://api.modellix.ai/api/v1/tasks/task-fl2v-abc123"
    }
  }
}

Authorizations

Authorization · string · header · required

API Key authentication. Format: Bearer YOUR_API_KEY.

Body

application/json

last_frame_image · string · required

Last frame image (required). URL or Base64 Data URL. Image format: JPG/JPEG/PNG/WebP, <20MB, short side >300px, aspect ratio between 2:5 and 5:2. Video resolution is determined by the first frame; if dimensions differ, the last frame will be auto-cropped.

Minimum string length: 1

Example:

"https://example.com/last-frame.jpg"

first_frame_image · string

First frame image (optional). URL or Base64 Data URL. If not provided, the model will auto-generate a first frame. Image format: JPG/JPEG/PNG/WebP, <20MB, short side >300px, aspect ratio between 2:5 and 5:2.

Minimum string length: 1

Example:

"https://example.com/first-frame.jpg"

prompt · string

Video content description (optional). Supports 15 camera control instructions. Format: Use [command] syntax for camera movements. Example: '[Pan left] Scene description' or '[Pan left,Pedestal up] for combined movements'. Max 2000 characters.

Required string length: 1 - 2000

Example:

"[Pan left] A beautiful sunset transition"

prompt_optimizer · boolean · default: true

Whether to automatically optimize the prompt. Default is true. Set to false for more precise control.

Example:

true

duration · enum<integer> · default: 6

Video duration in seconds. Options: 6 or 10. Note: 10 seconds only supports 768P resolution. Default is 6.

Available options: 6, 10

Example:

6

resolution · enum<string> · default: 768P

Video resolution. Options: 768P or 1080P. Note: FL2V does not support 512P. 10 seconds only supports 768P, 1080P only supports 6 seconds. Default is 768P.

Available options: 768P, 1080P

Example:

"1080P"

Response

200

application/json

Task submitted successfully

code · integer · required

Response code, 0 indicates success

Example:

0

message · string · required

Response message

Example:

"success"

data · object · required

Detailed data about the submitted asynchronous task.

Show child attributes