alibaba/happyhorse-1.0

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Alibaba's Happy Horse 1.0 generates videos from text prompts or animates a single image into video. Supports 720p and 1080p, 3-15 second durations, and five aspect ratios.

Capabilities

Reference Images Seed

Cost

Community model (estimated from hardware time)

Input Parameters

Name	Type	Description	Default	Constraints
`aspect_ratio`	string	Aspect ratio of the generated video. Only applies to text-to-video — when an image is provided, the image's aspect ratio is used.	`"16:9"`	16:9 9:16 1:1 4:3 3:4
`duration`	integer	Duration of the generated video in seconds	`5`	3 4 5 6 7 8 9 10 11 12 13 14 15
`image`	string (uri)	First-frame image to animate. When provided, the model runs in image-to-video mode. Accepts jpg/png/bmp/webp, ≤10MB, aspect ratio between 1:2.5 and 2.5:1, each side ≥300px.	`—`	—
`prompt`	string	Text prompt for video generation. Optional when an image is provided.	`""`	—
`resolution`	string	Output video resolution	`"1080p"`	720p 1080p
`seed`	integer	Random seed for reproducible generation. Range: 0-2147483647	`—`	—

aspect_ratio string

Aspect ratio of the generated video. Only applies to text-to-video — when an image is provided, the image's aspect ratio is used.

Default: "16:9"

16:9 9:16 1:1 4:3 3:4

duration integer

Duration of the generated video in seconds

Default: 5

3 4 5 6 7 8 9 10 11 12 13 14 15

image string

First-frame image to animate. When provided, the model runs in image-to-video mode. Accepts jpg/png/bmp/webp, ≤10MB, aspect ratio between 1:2.5 and 2.5:1, each side ≥300px.

prompt string

Text prompt for video generation. Optional when an image is provided.

Default: ""

resolution string

Output video resolution

Default: "1080p"

720p 1080p

seed integer

Random seed for reproducible generation. Range: 0-2147483647

Version: d867e39d045d Updated: 6/26/2026 15.3K runs