Alibaba Happy Horse 1.0 Image-to-Video

Happy Horse 1.0 Image-to-Video animates a reference image into a cinematic 720p / 1080p video, with optional text guidance for the motion. Strong subject preservation, smooth camera movement, and expressive motion.

Key Features

Image-faithful generation — Preserves the reference image's subject, composition, and style while adding motion.
Optional prompt guidance — Direct the camera, mood, and action in plain language.
Cinematic motion — Smooth, expressive movement and stable subjects.
Production-ready API — REST inference, no cold starts.

Parameters

Parameter	Required	Description
image	Yes	First-frame image URL. JPEG / PNG / BMP / WEBP. Min dimension 300 px. Aspect ratio 1:2.5 to 2.5:1. Max 10 MB.
prompt	No	Optional text prompt guiding the animation (max 2500 characters).
resolution	No	`720p` (default) or `1080p`.
duration	No	Video length in seconds (3-15, default 5).
seed	No	Random seed for reproducibility (0-2147483647).

Pricing

Resolution	Per second
720p	$0.14
1080p	$0.28

Examples (5s):

Resolution	Cost
720p	$0.70
1080p	$1.40

Examples (10s):

Resolution	Cost
720p	$1.40
1080p	$2.80

Notes

Pricing scales linearly with duration (3-15 s).
1080p is 2× the 720p rate.
Aspect ratio of the output video matches the reference image automatically.

Related Models

Alibaba Happy Horse 1.0 Text-to-Video — Generate video directly from text.

Alibaba Happy Horse 1.0 (Image-to-Video) animates a reference image into a cinematic 720p / 1080p video, optionally guided by a text prompt. Smooth camera movement and expressive, stable motion. Ready-to-use REST API, best performance, no coldstarts, affordable pricing.

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README