HappyHorse 1.0 Image to Video: Image-to-Video

Happy Horse 1.0 Image to Video animates a still image with selectable 720p/1080p output resolution — price scales with the resolution chosen. Happy Horse 1.0 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 1.0 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 1.0 Image to Video animates a single start-frame image into a fluid, expressive video clip, at your choice of 720p or 1080p output resolution. Upload an image and an optional text prompt guiding the motion, and the model brings the still to life with natural movement while preserving the original composition and style.

A single resolution parameter lets you draft cheaply at 720p and switch to 1080p for hero shots on the same endpoint, no separate integration needed.

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

Provider	Cost	Notes
muapiapp	$0.18–$0.36/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.

muapiapp$0.18–$0.36/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

Parameter	Type	Description	Default
Prompt	string	Optional text description guiding the motion.	`The motorcycle suddenly accelerates uncontrollably through traffic while the horse struggles to stay balanced. Cars swerve out of the way, sparks scrape across the road during sharp turns, and the camera tracks inches away from the speeding bike.`
Resolution	Enum (2 options)	Output resolution. Price scales with resolution: 720p is cheaper, 1080p is more expensive.	`720p`
Image	array	Upload or provide the image to animate.	`https://d3adwkbyhxyrtq.cloudfront.net/webassets/videomodels/happy-horse-1-image-to-video-720p.jpg`
Aspect Ratio	Enum (5 options)	Output video aspect ratio.	`16:9`
Duration (seconds)	int	Video duration in seconds.	`5`

Promptstring

Optional text description guiding the motion.

Default Value

The motorcycle suddenly accelerates uncontrollably through traffic while the horse struggles to stay balanced. Cars swerve out of the way, sparks scrape across the road during sharp turns, and the camera tracks inches away from the speeding bike.

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-720p.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

Provide a single start-frame image URL in images_list.
Optionally add a text prompt describing the desired motion.
Set resolution to "720p" (cheaper, default) or "1080p" (premium output).
Select aspect ratio and duration (3-15 seconds).
Submit your request—Happy Horse 1.0 animates the image at the selected resolution.
Download and review; bump the resolution for a higher-quality pass if needed.

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Common Questions

Frequently asked

What is the cost of Happy Horse 1.0 Image to Video?

Happy Horse 1.0 Image to Video costs $0.18/sec at 720p (default) or $0.36/sec at 1080p on muapi. A 5-second 720p clip costs $0.90; the same clip at 1080p costs $1.80.

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.

Can I guide the motion with a prompt?

Yes, the `prompt` field is optional and guides the motion/action applied to the image; leave it blank for the model's default interpretation.

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.