HappyHorse 1.0

POST https://api.beatapi.io/v1/videos/tasks

Animate a photo into 3–15 seconds of 720p or 1080p video. Image input is required.

Supported modes

Async flow: Create the task, save data.id, then poll the Task with GET /v1/tasks/{task_id}. On succeeded, read data.output.media. On failed, read data.error_code and data.error_message, then follow the error and retry policy.

Using a local file? upload a local input first and pass the returned data.url.

Authorization

Authorization   string   required

Send your BeatAPI API key as a Bearer token. Create one on the Dashboard.

Authorization: Bearer <BEATAPI_API_KEY>

Keep permanent API keys on trusted servers. Content-Type: application/json is required for the request body. Idempotency-Key is optional when the endpoint exposes it and is recommended for safe retries with the exact same body.

Request body

model   string   required

Must be happyhorse-1.0.

Value: happyhorse-1.0

prompt   string   required

What should happen in the shot — the motion, the expression, the camera.

Length: 1 to 5000 characters

images   string[]   required

Source images as public HTTPS URLs. At least one is required.

Count: 1 to 9 items

duration   integer   optional

Requested output duration in seconds.

Default: 5
Range: 3 to 15

aspect_ratio   enum<string>   optional

Output video aspect ratio.

Available options: 16:9, 9:16, 1:1, 4:3, 3:4
Default: "16:9"

resolution   enum<string>   optional

Output resolution tier. Price scales with it.

Available options: 720p, 1080p
Default: "720p"

Request examples

Image to video

$
curl --request POST \
>
  --url https://api.beatapi.io/v1/videos/tasks \
>
  --header 'Authorization: Bearer <BEATAPI_API_KEY>' \
>
  --header 'Content-Type: application/json' \
>
  --data '{
>
  "model": "happyhorse-1.0",
>
  "prompt": "The woman turns toward the camera and smiles, hair moving in the breeze.",
>
  "images": [
>
    "https://media.beatapi.io/samples/neon-singer.png"
>
  ],
>
  "duration": 5,
>
  "aspect_ratio": "9:16",
>
  "resolution": "720p"
>
}'

Multiple source images

$
curl --request POST \
>
  --url https://api.beatapi.io/v1/videos/tasks \
>
  --header 'Authorization: Bearer <BEATAPI_API_KEY>' \
>
  --header 'Content-Type: application/json' \
>
  --data '{
>
  "model": "happyhorse-1.0",
>
  "prompt": "Hold the product exactly as photographed while the camera pushes in.",
>
  "images": [
>
    "https://media.beatapi.io/samples/smart-bottle.png",
>
    "https://media.beatapi.io/samples/neon-singer.png"
>
  ],
>
  "duration": 10,
>
  "aspect_ratio": "16:9",
>
  "resolution": "1080p"
>
}'

Response

A successful request returns HTTP 201.

1
{
2
  "data": {
3
    "id": "task_8K2qA",
4
    "object": "task",
5
    "task_kind": "video",
6
    "capability_id": "happyhorse-1.0",
7
    "capability_version": null,
8
    "media_type": "video",
9
    "model": "happyhorse-1.0",
10
    "status": "queued",
11
    "stage": "queued",
12
    "created_at": 1782210000,
13
    "updated_at": 1782210000,
14
    "completed_at": null,
15
    "output": null,
16
    "usage": {
17
      "credits_reserved": 0.7,
18
      "credits_charged": 0.7,
19
      "billable_duration_seconds": 5,
20
      "credits_settled": 0,
21
      "credits_refunded": 0
22
    },
23
    "request_id": "req_abc123",
24
    "error_code": null,
25
    "error_message": null
26
  }
27
}

Errors