Video

Happy Horse 1.0 Video Edit video

Source video + prompt edit. Optional reference imagery. 720p/1080p, source 3–60s, billing cap 15s.

Category: Edit · happy-horse-1-0-video-edit

How to use & limits

Video edit: send video_url + an edit prompt.
reference_image_urls is optional in edit; cite them in the prompt as @Image1, @Image2...
Source video must be 3 to 60 seconds; output follows the video and truncates at the first 15s.
duration is ignored in edit — duration comes from the source video (billing capped at 15s).
audio_setting: auto (model decides) or origin (preserves original audio).
Resolution 720p or 1080p.

Capabilities

What this model supports, straight from the schema — no pricing, no infrastructure detail.

Capability	Value
`video_edit` Video edit	Yes
`multi_shots` Multi-shot	—
`multi_prompt` Multi-prompt	—
`text_to_video` Text-to-video	Yes
`image_to_video` Image-to-video	Yes
`max_prompt_length` Max prompt length	2500
`reference_to_video` Reference-to-video	Yes
`named_character_refs` Named character references	Yes

Parameters

Fields accepted in params (or first-class, where applicable) for POST /generations.

Name	Label	Type	Required	Default	Options	Min / Max	Description
`prompt`	Prompt	textarea	Optional	—	—	—	Edit instruction (required for this flow); up to 5,000 characters.
`image_urls`	Image references	multi_select	Optional	—	—	— – 1	Optional supporting image (max 1).
`reference_image_urls`	Reference images	multi_select	Optional	—	—	1 – 9	Optional reference images to guide the edit.
`aspect_ratio`	Aspect ratio	select	Optional	16:9	16:9 · 9:16 · 1:1 · 4:3 · 3:4	—	Aspect ratio: 16:9, 9:16, 1:1, 4:3 or 3:4.
`duration`	Duration	number	Optional	5	—	3 – 15	Ignored in edit; duration follows the source video.
`audio_setting`	Audio setting	select	Optional	auto	auto · origin	—	Audio: auto or origin (preserves the original).
`seed`	Seed	number	Optional	—	—	—	Optional integer seed.
`video_url`	Source video	url	Optional	—	—	—	Source video to edit (3 to 60 seconds).
`resolution`	Resolution	select	Optional	1080p	720p · 1080p	—	Resolution: 720p or 1080p (default 1080p).
`enable_safety_checker`	Safety filter	boolean	Optional	—	—	—	Toggles the safety filter.

Example request

bash

curl -X POST https://caranguejo.art/api/v1/dev/generations \
  -H "Authorization: Bearer $CK" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "happy-horse-1-0-video-edit",
  "prompt": "Replace the sky with a dramatic sunset and add low ground fog.",
  "params": {
    "resolution": "1080p",
    "audio_setting": "auto",
    "image_urls": [
      "https://media.caranguejo.art/inputs/example.mp4"
    ]
  }
}'

javascript

const res = await fetch("https://caranguejo.art/api/v1/dev/generations", {
  method: "POST",
  headers: {
    "Authorization": "Bearer " + process.env.CK,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "model": "happy-horse-1-0-video-edit",
    "prompt": "Replace the sky with a dramatic sunset and add low ground fog.",
    "params": {
      "resolution": "1080p",
      "audio_setting": "auto",
      "image_urls": [
        "https://media.caranguejo.art/inputs/example.mp4"
      ]
    }
  }),
});
const { data } = await res.json();

Example response

json

{
  "id": "9f0c1a7e-…",
  "object": "generation",
  "model": "happy-horse-1-0-video-edit",
  "type": "video",
  "status": "completed",
  "output": {
    "assets": [
      {
        "url": "https://media.caranguejo.art/outputs/example.mp4",
        "type": "video"
      }
    ]
  }
}

The job's real cost is returned as credits_charged on the completed response — check GET /balance for the account balance.

Common errors for this job type:

`insufficient_credits`	Account balance can't cover the job cost.
`content_policy_violation`	Prompt or media rejected by content policy.
`generation_timeout`	The job exceeded the maximum processing time.
`rate_limited`	Too many requests per minute.
`invalid_input`	A required parameter is missing or outside the model's schema.
`generation_failed`	Generic processing failure.