Alibaba

Happy Horse

Happy Horse is a general-purpose text-to-video and image-to-video model for clips from 3 to 15 seconds. In image-to-video mode, the uploaded image fixes the opening composition while the prompt directs motion; in text-to-video mode, the prompt and aspect ratio define the whole shot.

How to use this model

  1. 1

    Choose text-to-video for a scene built from scratch, or upload one image when you need to animate a fixed opening frame.

  2. 2

    Describe the subject, its action, camera movement, lighting, and how the shot should end.

  3. 3

    For text-to-video, select the aspect ratio for the destination format; an uploaded image supplies its own ratio in image-to-video mode.

  4. 4

    Set the duration and resolution, then preview the result for motion continuity before increasing clip length.

1.0Available

HappyHorse 1.0

Use this version for either a fully prompted shot or an image-led animation. A single input image fixes the first frame and its aspect ratio; without an image, the selected aspect ratio controls the text-to-video canvas.

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Properties

  • Inputs: text prompt, or one first-frame image with an optional motion prompt.
  • Output controls: 3–15 second duration and 720p or 1080p resolution.

How to use this model

  1. 1

    Choose text-only generation or upload one opening image.

  2. 2

    Describe motion, camera direction, lighting, and the end state.

  3. 3

    Set duration and resolution; select aspect ratio only for text-to-video.

  4. 4

    Preview motion continuity before generating a longer clip.

Parameters

Image

image
Optional

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

prompt
Optional

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

Duration

duration
Optional

Duration of the generated video in seconds. Defaults to 5 if omitted.

Default: 5Range: 3 – 15

Resolution

resolution
Optional

Output video resolution. Defaults to 1080p if omitted.

Default: 1080p

  • 720p

  • 1080p

Aspect Ratio

aspect_ratio
Optional

Aspect ratio of the generated video. Only applies to text-to-video — when an image is provided, the image's aspect ratio is used. Defaults to 16:9 if omitted.

Default: 16:9

  • 16:9

  • 4:3

  • 1:1

  • 3:4

  • 9:16

Seed

seed
Optional
Range: 0 – 2147483647