Video Edit: AI Video Editor

Happy Horse 1.1 Video Edit (1080p) — modify an input video using natural-language instructions with optional reference images.

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Overview

About this model

Updated Jul 16, 2026

Happy Horse 1.1 Video Edit (1080p) modifies input video using natural-language instructions, enabling semantic video transformation at 1080p resolution. Provide a source video and a text prompt describing your desired changes—style shifts, scene modifications, additional elements, motion adjustments—and the model generates edited 1080p video that honors your instructions while maintaining temporal coherence and visual quality. Optional reference images and a seed parameter allow fine-grained control over the edit direction and reproducibility.

Happy Horse 1.1 Video Edit (1080p) is ideal for video producers, filmmakers, editors, and content creators who want rapid video iteration without traditional editing labor. Through muapi's unified API with transparent pricing and no subscriptions, transform video at scale.

1Visual style transformation: adapt video to different artistic styles, color grading, or cinematic moods using text instructions

2Scene modification and augmentation: add elements, change backgrounds, or modify environments in existing video footage

3Content repurposing: edit existing video to match new campaign themes, brand guidelines, or platform-specific requirements

4Video effects and grading: apply effects, color corrections, or mood adjustments to video without traditional post-production tools

5Temporal editing: adjust motion, pacing, or action sequences in video through natural language instructions

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Pricing & Value

Cost analysis

Provider	Cost	Notes
muapiapp	$0.90 per edit	Transparent per-edit pricing for 1080p video transformation. No subscriptions, no per-minute charges—cost-effective video editing without traditional post-production overhead.

muapiapp$0.90 per edit

Transparent per-edit pricing for 1080p video transformation. No subscriptions, no per-minute charges—cost-effective video editing without traditional post-production overhead.

* 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	Edit instruction describing the change to apply to the video.	`Replace the horse with @image1 and replace the shopping cart with @image2 while preserving the original high-speed motion and camera movement.`
Video URL	string	Source video URL. MP4/MOV (H.264 recommended), 3-60s, <=100 MB, longer side <=2160px, shorter >=320px, frame rate >8 fps.	`https://d3adwkbyhxyrtq.cloudfront.net/webassets/videomodels/happy-horse-1-reference-to-video-720p.mp4`
Reference Images	array	Optional 0-5 reference image URLs to guide the edit.	`https://d3adwkbyhxyrtq.cloudfront.net/webassets/videomodels/happy-horse-1-video-edit-1080p-1.jpg`
Audio Setting	Enum (2 options)	Audio strategy: 'auto' lets the model decide, 'origin' preserves source audio.	`auto`
Seed	int	Optional random seed for reproducibility (0-2147483647).	`0`

Promptstring

Edit instruction describing the change to apply to the video.

Default Value

Replace the horse with @image1 and replace the shopping cart with @image2 while preserving the original high-speed motion and camera movement.

Video URLstring

Source video URL. MP4/MOV (H.264 recommended), 3-60s, <=100 MB, longer side <=2160px, shorter >=320px, frame rate >8 fps.

Default Valuehttps://d3adwkbyhxyrtq.cloudfront.net/webassets/videomodels/happy-horse-1-reference-to-video-720p.mp4

Reference Imagesarray

Optional 0-5 reference image URLs to guide the edit.

Default Valuehttps://d3adwkbyhxyrtq.cloudfront.net/webassets/videomodels/happy-horse-1-video-edit-1080p-1.jpg

Audio SettingEnum (2 options)

Audio strategy: 'auto' lets the model decide, 'origin' preserves source audio.

Default Valueauto

Seedint

Optional random seed for reproducibility (0-2147483647).

Default Value0

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Implementation Guide

Developer documentation

Prepare your source video (upload to muapi or provide a URL).
Write a detailed text prompt describing the edit or transformation (e.g., 'add a sci-fi neon glow effect and speed up the action' or 'change the background to a fantasy castle').
Optionally, provide 1–9 reference images to guide the visual style or content of the edit.
Select your aspect ratio (should generally match your source video).
Optionally, provide a seed value for reproducible edits.
Submit your request to muapi—Happy Horse 1.1 will edit your video at 1080p resolution according to your instructions.
Download the edited video.

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Common Questions

Frequently asked

What is the cost of Happy Horse 1.1 Video Edit (1080p)?

Happy Horse 1.1 Video Edit (1080p) costs $0.90 per edit on muapi. Regardless of source video length, edit complexity, or reference images provided, each edit incurs a single $0.90 charge. No subscriptions or per-minute fees.

Can I edit the same video multiple times with different prompts?

Yes. You can submit multiple edit requests on the same source video, experimenting with different transformations and style changes. Each edit is charged separately at $0.90.

How do reference images affect the video edit?

Reference images guide the visual style, color palette, aesthetic, and visual direction of the edit. Including reference images creates stronger stylistic consistency and lets you prescribe the exact visual direction you want.