alibaba/happyhorse-1.0

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.

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Happy Horse 1.0 is a video generation model from Alibaba. It can generate video from a text prompt, or animate a single first-frame image into video.

Modes

  • Text-to-video: provide a prompt. Use aspect_ratio to control the shape.
  • Image-to-video: provide an image as the first frame. The output adopts the image’s aspect ratio (the aspect_ratio input is ignored).

If you provide both an image and a prompt, the prompt steers the motion of the animated image.

Inputs

  • prompt — text prompt. Required for text-to-video. Optional when an image is provided. Up to 2,500 characters.
  • image — first-frame image to animate. JPG, PNG, BMP, or WEBP. Each side at least 300px. Aspect ratio between 1:2.5 and 2.5:1. Up to 10MB.
  • resolution — 720p or 1080p. Default 1080p.
  • aspect_ratio — text-to-video only. One of 16:9, 9:16, 1:1, 4:3, 3:4. Default 16:9.
  • duration — integer seconds, 3 through 15. Default 5.
  • seed — integer 0–2,147,483,647. Optional.

Pricing

  • 720p: $0.14 per second of output video
  • 1080p: $0.28 per second of output video
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