---
title: "happy-horse-1-reference-to-video-1080p (best)"
method: POST
path: "/api/v1/happy-horse-1-reference-to-video-1080p"
tags: ["Video: Edit & Effects"]
---

# happy-horse-1-reference-to-video-1080p (best)

`POST /api/v1/happy-horse-1-reference-to-video-1080p`

## Request

- Base URL: `https://api.muapi.ai`
- URL: `https://api.muapi.ai/api/v1/happy-horse-1-reference-to-video-1080p`
- Auth: one of:
  - API key in header `x-api-key`
  - OAuth 2 (client credentials, token URL `https://api.muapi.ai/oauth/token`)

Generate 1080p video from text + 1-9 reference images with Happy Horse 1. Input: prompt + images_list (1-9 reference images, ≥400px, ≤10 MB each). Output: 1080p video featuring the reference subject(s). Use for: cinematic character-locked video, narrative shots with consistent identity across multiple references.

## Query parameters

- `webhook` string
- `team_id` integer, nullable

## Headers

- `x-api-key` string
- `x-embed-code` string, nullable
- `x-agent-embed-code` string, nullable
- `x-whitelabel-studio` string, nullable
- `authorization` string, nullable

## Request body

- HappyHorse1RefToVideoRequest
  - `prompt` string, required: Text description of the desired video content.
  - `images_list` string[], required: 1–9 reference image URLs. JPEG/PNG/WEBP, ≥400px shortest side, ≤10 MB each.
  - `webhook_url` string, uri, nullable
  - `aspect_ratio` '16:9' | '9:16' | '1:1' | '4:3' | '3:4'
  - `duration` integer: Video duration in seconds (3–15).
  - `seed` integer, nullable: Optional random seed for reproducibility.
  - `resolution` '720p' | '1080p': Output resolution. Price scales with resolution — see the model's pricing table.

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/muapi/apis/muapi-api.md) · [All operations](https://skmtc.dev/muapi/apis/muapi-api/llms.txt) · [OpenAPI document](https://skmtc.dev/muapi/apis/muapi-api/revisions/e4b7374381e5?raw)