Runway Aleph 2
Runway · Video · Video → Video
Next-gen video restyling with keyframe image guidance for precise motion and style control.
runway-aleph2Workflow: runway-alephOverview
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 'runway-aleph' workflow directly — params are sent as-is.
const { result, usage } = await ai.apis.run('runway-aleph', {
model: "gen4_aleph",
videoUri: "your value here",
promptText: "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('runway-aleph', {
model: "gen4_aleph",
videoUri: "your value here",
promptText: "your value here"
}, {
mode: ApiRunMode.ASYNC,
});
console.log(result);Parameters
10 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 |
|---|---|---|---|---|
modelModel to use for video-to-video generation | string | yes | gen4_aleph | gen4_alephaleph2 |
videoUriA valid HTTPS URL to the video file, or a data URI | string | yes | — | — |
promptTextDescribe in detail what should appear in the output | string | yes | — | max 1000 chars |
ratioAspect ratio for the generated video | string | no | — | 1280:720720:12801104:832960:960832:11041584:672848:480640:480 |
seedSeed for generation (0 to 4294967295). Only supported by gen4_aleph. | number | no | — | — |
referencesList of image references to influence style or content. Only supported by gen4_aleph. | ImageReference[] | no | — | — |
└ typeType of media (image only) | string | yes | — | image |
└ uriURI of the image | string | yes | — | — |
promptImageKeyframe images for precise control over edits (max 5). Only supported by aleph2. | PromptImage[] | no | — | — |
└ uriHTTPS URL, Runway URI, or data URI of the keyframe image | string | yes | — | — |
└ positionPosition of the keyframe: "first", "last", or a timestamp object { type: "timestamp", timestampSeconds: number } | string | object | yes | — | — |
contentModerationContent moderation settings | object | no | — | — |
└ publicFigureThresholdWhen set to low, the content moderation system will be less strict about public figures. | string | yes | auto | autolow |
transformVideoVideo transformation setting, default is true | object | no | — | — |
└ publicFigureThresholdWhen set to low, the content moderation system will be less strict about public figures. | string | yes | auto | autolow |
optionsOptions controlling safety checks and drive integration | 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": 9
}
}