---
title: "happy-horse-1-video-edit-720p (balanced)"
method: POST
path: "/api/v1/happy-horse-1-video-edit-720p"
tags: ["Video: Edit & Effects"]
---

# happy-horse-1-video-edit-720p (balanced)

`POST /api/v1/happy-horse-1-video-edit-720p`

## Request

- Base URL: `https://api.muapi.ai`
- URL: `https://api.muapi.ai/api/v1/happy-horse-1-video-edit-720p`
- Auth: one of:
  - API key in header `x-api-key`
  - OAuth 2 (client credentials, token URL `https://api.muapi.ai/oauth/token`)

Edit an existing 720p video using Happy Horse 1 (cheaper). Input: prompt + video_url + optional images_list (up to 5) + audio_setting. Output: 720p edited video. Use for: cost-effective video editing.

## 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

- HappyHorse1VideoEditRequest
  - `prompt` string, required: Edit instruction describing the change to apply to the video.
  - `video_url` string, uri, required: Source video URL. MP4 or MOV (H.264 recommended), 3–60s, ≤100 MB, longer side ≤2160px, shorter side ≥320px, frame rate >8 fps.
  - `images_list` string[], nullable: 0–5 optional reference image URLs. JPEG/PNG/WEBP, ≥300px each side, ≤10 MB each.
  - `webhook_url` string, uri, nullable
  - `audio_setting` 'auto' | 'origin'
  - `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)