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HappyHorse 1.0 I2V animates a single first-frame image into a short video. Uses an asynchronous task interface — submit a task and poll until completion.

Key Capabilities

  • Image-to-video — Use one image as the first frame, with text description driving motion
  • 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

The image field accepts a single URL. You can also use the images: [...] array form (only the first image is used as the first frame).

Parameters

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 I2V interactive Playground.

Task Query

Poll task status and retrieve the final video URL.