Happy Horse 1.0 Video Edit
NewHappy Horse · Video · Video → Video
Edit video — style transfer or object replacement, with up to 5 references.
happyhorse-1.0-video-editWorkflow: happyhorse/v1/video-editOverview
Alongside the unified model APIs, we expose compatibility APIs that take each vendor's original parameters exactly as the vendor defines them — nothing renamed, nothing reshaped on the way through.
That makes them the shortest path onto Picsart if you already work with the vendor directly: the request bodies you've already written keep working as they are. You keep their parameter names and defaults, and you get the vendor's full parameter set rather than the subset that is shared across every model.
The cost is that a request is written for one vendor — switching models later means rewriting it, and results come back in the vendor's own shape. When you'd rather write once and change models freely, use the unified API.
Make a request
Call the workflow with ai.apis.run() in TypeScript, or hit /workflows/{workflow}/execute directly — params is passed through untouched either way.
These endpoints are addressed by workflow name rather than model id: the one in this model's header, since one model runs as one workflow. Authentication is unchanged — your Picsart API key as a bearer token (see Authentication).
import { createClient, ApiRunMode } from '@picsart/ai-sdk';
const ai = createClient({
apiKey: process.env.PICSART_API_KEY,
apiUrl: 'https://api.picsart.com',
});
// Calls the 'happyhorse/v1/video-edit' workflow directly — params are sent as-is.
const { result, usage } = await ai.apis.run('happyhorse/v1/video-edit', {
prompt: "A serene mountain lake at golden hour, ultra detailed",
media: [
{
type: "video",
url: "your value here"
}
]
}, {
mode: ApiRunMode.SYNC,
});
console.log(result); // workflow-specific output
console.log(usage?.credits); // credits chargedAsync (submit & poll)
This model can run longer than the sync limit (~20s). In TypeScript, ai.apis.run(…, { mode: ApiRunMode.ASYNC }) polls for you; over HTTP, submit and poll yourself.
import { createClient, ApiRunMode } from '@picsart/ai-sdk';
const ai = createClient({
apiKey: process.env.PICSART_API_KEY,
apiUrl: 'https://api.picsart.com',
});
// mode: ASYNC submits the job and polls under the hood — you just await.
const { result } = await ai.apis.run('happyhorse/v1/video-edit', {
prompt: "A serene mountain lake at golden hour, ultra detailed",
media: [
{
type: "video",
url: "your value here"
}
]
}, {
mode: ApiRunMode.ASYNC,
});
console.log(result);Parameters
7 parameters, sent inside params. These are the vendor's own names, so they line up one-for-one with the vendor's documentation. Required ones must be supplied; the rest fall back to their defaults.
| Parameter | Type | Required | Default | Details |
|---|---|---|---|---|
promptText prompt describing the desired edit (style transfer, local replacement, etc.). Max 2500 characters; auto-truncated if longer. | string | yes | — | — |
mediaArray of media. Exactly 1 item of type `video` and 0–5 items of type `reference_image`. | HappyhorseV2VMediaItem[] | yes | — | — |
└ typeMedia asset type. `video`: the video to edit (exactly 1 required). `reference_image`: optional editing guidance image (0–5). | string | yes | — | videoreference_image |
└ urlHTTP(S) URL of the media asset. Video: MP4/MOV (H.264 recommended), 3–60 s, longer side ≤ 2160 px, shorter side ≥ 320 px, aspect ratio 1:2.5–2.5:1, ≥ 8 fps, max 100 MB. Reference image: JPEG/JPG/PNG/WEBP, both sides ≥ 300 px, aspect ratio 1:2.5–2.5:1, max 10 MB. | string | yes | — | — |
resolutionResolution tier of the generated video. `720P` or `1080P`. Default `1080P`. Affects cost. | string | no | 1080P | 720P1080P |
audio_settingAudio control. `auto` (default): determined by the model. `origin`: preserve the original audio from the input video. | string | no | auto | autoorigin |
seedRandom seed controlling determinism. Integer in [0, 2147483647]. Randomly generated when omitted. Identical seeds do not guarantee identical results. | number | no | — | — |
watermarkWhen true, embeds a "Happy Horse" watermark in the lower-right corner. Vendor default is true; Picsart default is false. | boolean | no | false | — |
optionsGenAI options for safety checks and Drive saving. | object | no | — | — |
└ safety_checksSafety check settings | object | no | — | — |
└ enabledWhether to run content moderation. Defaults to true. | boolean | no | — | — |
└ driveSave result to Picsart Drive | object | no | — | — |
└ nameFile name in Picsart Drive | string | yes | — | — |
└ attributesCustom attributes to attach to the file | object | no | — | — |
└ folderTarget folder in Picsart Drive | object | no | — | — |
Response
Over HTTP the output arrives inside a status envelope, at response.result. ai.apis.run() unwraps that envelope for you and resolves to { result, usage } instead. Either way the resultitself is the vendor's own shape.
{
"result": {
"url": "https://cdn.picsart.com/…/result.mp4",
"mimeType": "video/mp4",
"driveFile": {}
},
"usage": {
"credits": 5
}
}