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HappyHorse 1.1 Image to Video: Image-to-Video

Happy Horse 1.1 Image to Video brings still images to life with fluid, expressive animation, with selectable 720p/1080p output resolution. Happy Horse 1.1 Image to Video — bring still images to life with fluid, expressive animation. Selectable output resolution (720p/1080p) — price scales with the resolution chosen.

Interactive model controls

Happy Horse 1.1 Image to Video — bring still images to life with fluid, expressive animation. Selectable output resolution (720p/1080p) — price scales with the resolution chosen.

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Overview

About this model

Updated Sep 11, 2026

Happy Horse 1.1 Image to Video animates a single start-frame image into a fluid, expressive video clip, at your choice of 720p or 1080p output resolution, with improved reliability over Happy Horse 1.0 via an automatic fallback provider path.

A single resolution parameter lets you draft cheaply at 720p and switch to 1080p for final output on the same endpoint.

1Product photo animation: bring static product shots to life for marketing and social media
2Portrait animation: add subtle motion to character or portrait images
3Concept art bring-to-life: animate illustrations or concept art for pitches and previews
4Social media content: turn still photography into eye-catching short-form video
5Storyboard previsualization: animate key frames to preview motion before full production
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Pricing & Value

Cost analysis

muapiapp$0.14–$0.18/sec (720p–1080p)

Simple per-second, resolution-scaled pricing with no subscriptions. Pick 720p for cost-effective drafts or 1080p for premium output, on the same endpoint.

** Competitor pricing is estimated based on similar model architectures and usage tiers.

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Technical Details

Configuration schema

Promptstring

Optional text description guiding the motion.

Default ValueA tiny horse wearing boxing gloves stands in front of a massive battle robot. The horse suddenly charges fearlessly and punches the robot so hard that cars flip over.
ResolutionEnum (2 options)

Output resolution. Price scales with resolution: 720p is cheaper, 1080p is more expensive.

Default Value720p
Imagearray

Upload or provide the image to animate.

Default Valuehttps://d3adwkbyhxyrtq.cloudfront.net/webassets/videomodels/happy-horse-1-image-to-video-1080p.jpg
Aspect RatioEnum (5 options)

Output video aspect ratio.

Default Value16:9
Duration (seconds)int

Video duration in seconds.

Default Value5
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Implementation Guide

Developer documentation

  1. Provide a single start-frame image URL in images_list.
  2. Optionally add a text prompt describing the desired motion.
  3. Set resolution to "720p" (cheaper, default) or "1080p" (premium output).
  4. Select aspect ratio and duration (3-15 seconds).
  5. Submit your request—Happy Horse 1.1 animates the image at the selected resolution.
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Common Questions

Frequently asked

What is the cost of Happy Horse 1.1 Image to Video?

Happy Horse 1.1 Image to Video costs $0.14/sec at 720p (default) or $0.18/sec at 1080p on muapi. A 5-second 720p clip costs $0.70; the same clip at 1080p costs $0.90.

How is 1.1 different from Happy Horse 1.0?

1.1 is a newer generation with improved reliability (automatic fallback provider) and lower per-second pricing at both resolutions.

How do I choose the resolution?

Pass `resolution: "720p"` (default) or `resolution: "1080p"` in your request body — both are served by the same endpoint.

How many images can I provide?

Exactly one — `images_list` takes a single-element list, the start frame the video animates from.

What happened to the dedicated 720p/1080p endpoints?

They still work exactly as before, unchanged, for existing integrations. This unified endpoint is the new recommended way to access both resolutions through one integration.