Reference to Video: AI Image-to-Video Generator
Happy Horse 1.1 Reference to Video (720p) — generate 720p video conditioned on 1-9 reference images plus a text prompt.
Happy Horse 1.1 Reference to Video (720p) — generate 720p video conditioned on 1-9 reference images plus a text prompt.
About this model
Happy Horse 1.1 Reference to Video (720p) is a cost-optimized version that conditions video generation on 1–9 reference images plus a text prompt, producing 720p video with consistent visual elements. Provide reference images to guide style, character, and composition, and Happy Horse generates smooth video that honors those visual constraints. The seed parameter enables reproducible generation, making it perfect for iterative workflows and high-volume content production where 720p delivers excellent visual quality.
Happy Horse 1.1 Reference-to-Video (720p) is ideal for teams scaling video production, game developers on budget, and content creators who need reference-guided consistency without premium resolution overhead. Available through muapi with transparent per-generation pricing and no subscriptions.
Cost analysis
| Provider | Cost | Notes |
|---|---|---|
| muapiapp | $0.70 per generation | Cost-effective, transparent per-generation pricing with no per-image surcharges. Scale reference-guided video production affordably without subscriptions. |
Cost-effective, transparent per-generation pricing with no per-image surcharges. Scale reference-guided video production affordably without subscriptions.
* Competitor pricing is estimated based on similar model architectures and usage tiers.
Configuration schema
| Parameter | Type | Description | Default |
|---|---|---|---|
| Prompt | string | Text description of the desired video. Up to 5,000 characters. | Place @image1 inside @image2 running across countertops while giant cooking disasters happen everywhere. Exploding soup pots, flying vegetables, and fire bursts create chaos. |
| Reference Images | array | 1-9 reference image URLs. JPEG/PNG/WEBP, >=400px shortest side, <=10 MB each. | https://d3adwkbyhxyrtq.cloudfront.net/webassets/videomodels/happy-horse-1-reference-to-video-1080p-1.jpg |
| Aspect Ratio | Enum (5 options) | Output video aspect ratio. | 16:9 |
| Duration (seconds) | int | Video duration in seconds. | 5 |
| Seed | int | Optional random seed for reproducibility (0-2147483647). | 0 |
Text description of the desired video. Up to 5,000 characters.
Place @image1 inside @image2 running across countertops while giant cooking disasters happen everywhere. Exploding soup pots, flying vegetables, and fire bursts create chaos.1-9 reference image URLs. JPEG/PNG/WEBP, >=400px shortest side, <=10 MB each.
https://d3adwkbyhxyrtq.cloudfront.net/webassets/videomodels/happy-horse-1-reference-to-video-1080p-1.jpgOutput video aspect ratio.
16:9Video duration in seconds.
5Optional random seed for reproducibility (0-2147483647).
0Developer documentation
Frequently asked
Happy Horse 1.1 Reference to Video (720p) costs $0.70 per generation on muapi. This flat rate applies regardless of how many reference images you provide (1–9) or video duration. No subscriptions or additional charges.
You can provide 1–9 reference images. More references give the model stronger guidance on visual consistency, but even a single reference image can meaningfully constrain the output. Experiment to find the right balance for your use case.
Yes, absolutely. Using consistent reference images across multiple requests ensures visual cohesion across your video library. Each new prompt/generation incurs a separate $0.70 charge.