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Happy Horse 1.1

Happy Horse 1.1 is Alibaba's #1-ranked video model. This reference-to-video endpoint turns up to 9 reference images into 1080p video with synchronized native audio and multilingual lip-sync for consistent characters.

Input

Fields marked * are required. Review the price before generating.

Text prompt describing the desired video. Reference subjects from your images using `character1, character2, ... up to character9 (the order matches the order of image_urls`). Max 2500 characters.

Reference images for subject consistency (1-9 images). Formats: JPEG, JPG, PNG, WEBP. Shortest side must be at least 400 px (720P or higher recommended). Max 20 MB each.

Uploading a file needs an account. Create accountJPEG, PNG, WebP · up to 25 MB

Aspect ratio of the generated video.

Output video resolution tier.

Output video duration in seconds (3-15).

Additional settings

Random seed for reproducibility (0-2147483647).

Starting price$0.23 / second

You sign up first. Your settings are kept.

API code for this input

Complete the required fields and fix input errors to see API code.

How to use Happy Horse 1.1

Getting started

Plan dialogue or ambient scenes with explicit actions and camera direction.

Review your result

Review speech timing, character continuity and the first and last frames.

Inputs and settings

Text mode requires prompt. Image mode requires image_url and makes prompt optional; reference mode requires image_urls and prompt.

Select 3–15 seconds and 720p or 1080p. Text and reference modes expose aspect_ratio; the single-image operation does not.

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