Key Capabilities
- Reference-image-to-video — Use 1–3 images as visual references
- Resolution — 720P / 1080P
- Aspect ratio — 16:9, 9:16, 1:1, 4:3, 3:4
- Duration — 3–15 seconds
- Watermark control — Optionally disable the bottom-right watermark
Workflow
Quick Example
Parameters
| Parameter | Type | Required | Description |
|---|---|---|---|
model | string | Yes | Must be happyhorse-1.0-r2v |
prompt | string | Yes | Video description text |
images | string[] | Yes | 1–3 reference image URLs |
resolution | string | No | 720P / 1080P, default 1080P |
ratio | string | No | 16:9, 9:16, 1:1, 4:3, 3:4, default 16:9 |
duration | integer | No | Video duration 3–15 seconds, default 5 |
watermark | boolean | No | Default true, set to false to disable watermark |
seed | integer | No | Random seed [0, 2147483647] |
Billing
Billed by resolution tier × user-requested duration. The pre-charged amount is the final amount. Failed tasks are automatically refunded.API Reference
HappyHorse 1.0 R2V interactive Playground.
Task Query
Poll task status and retrieve the final video URL.

