Sample Request

curl --request POST \
     --url https://cloud.leonardo.ai/api/rest/v2/generations \
     --header 'accept: application/json' \
     --header 'authorization: Bearer <YOUR_API_KEY>' \
     --header 'content-type: application/json' \
     --data '
{
    "model": "happy-horse-1.1",
    "public": false,
    "parameters": {
      "prompt": "YOUR_PROMPT",
      "guidances": {
        "start_frame": [
          {
            "image": {
              "id": "<YOUR_START_IMAGE_ID>",
              "type": "UPLOADED"
            }
          }
        ]
      },
      "duration": 5,
      "quantity": 1,
      "prompt_enhance": "OFF",
      "motion_has_audio": true,
      "width": 1920,
      "height": 1080
    }
}
'

API Request Endpoint, Headers, Parameters

Endpoint

https://cloud.leonardo.ai/api/rest/v2/generations

Headers

--header "accept: application/json" \
--header "authorization: Bearer <YOUR_API_KEY>" \
--header "content-type: application/json"

Body Parameters

Parameter	Type	Definition
duration	`number`	Length of the generated video in seconds. Set to any integer from `3` to `15`. Defaults to `5`.
guidances.image_reference	`array`	Maximum 9 items. References images to guide your video generation. Each item includes image.id, image.type (`INIT`, `GENERATION`, `UPLOADED`, `GENERATED`, `VARIATION`), a required strength (`LOW`, `MID`, `HIGH`; defaults to `MID`), and an optional order.
guidances.start_frame	`array`	Maximum 1 item. Each item includes image.id and image.type (`INIT`, `GENERATION`, `UPLOADED`, `GENERATED`, `VARIATION`).
height	`number`	Sets the height of the output video in pixels. Defaults to `1080`.
model	`string`	Specifies the model used for generation. Set to `happy-horse-1.1`.
motion_has_audio	`boolean`	Whether the generated video includes audio. Defaults to `true`.
prompt	`string`	Required. Text description of the video content to generate. Maximum of 2500 characters.
prompt_enhance	`string`	Enables or disables prompt enhancement. Valid values are `AUTO`, `ON` and `OFF`. Defaults to `AUTO`.
public	`boolean`	Controls whether the generated video is public (true) or private (false).
quantity	`number`	Required. The number of outputs to generate. Set to `1`. Defaults to `1`.
seed	`number`	The seed value for generation.
width	`number`	Sets the width of the output video in pixels. Defaults to `1920`.

Dimensions

The API accepts width and height parameters in the following aspect ratio combinations:

Resolution	Aspect Ratio	Pixel Values (Width x Height)
720p	16:9 (Landscape)	1280x720
	4:3	1108x832
	1:1 (Square)	960x960
	3:4	832x1108
	9:16 (Portrait)	720x1280
1080p	16:9 (Landscape)	1920x1080
	4:3	1662x1248
	1:1 (Square)	1440x1440
	3:4	1248x1662
	9:16 (Portrait)	1080x1920