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alibaba/wan-2.1-lora/video-edit

Wan 2.1 LoRA video-to-video redraws a clip you already have from a prompt, keeping its motion and timing, with up to three of your own LoRA files on Alibaba's 14B model. Output at 480p or 720p in the shape of the source, nothing filtered.

From $0.24/request
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Quickstart

Examples use the selected endpoint’s public parameter definitions. Replace the API key and example media, then send the request from your server.

SDKs & integrations
POSThttps://api.spicyapi.ai/api/v1/jobs/createTask

API authentication

Keep the API key in the server environment variable SPICY_API_KEY. Use Bearer authentication and Content-Type: application/json for JSON requests.

Authorization: Bearer $SPICY_API_KEY
Sample outputUse this example
# Generate the idempotency key once; reuse it when retrying after a lost response.
export SPICY_IDEMPOTENCY_KEY="${SPICY_IDEMPOTENCY_KEY:-$(uuidgen)}"
curl -X POST https://api.spicyapi.ai/api/v1/jobs/createTask \
  -H "Authorization: Bearer $SPICY_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $SPICY_IDEMPOTENCY_KEY" \
  -d '{
  "model": "alibaba/wan-2.1-lora/video-edit",
  "input": {
    "duration_seconds": 5,
    "prompt": "A slow aerial shot drifting over a misty pine forest at sunrise",
    "resolution": "480p",
    "video_url": "https://example.com/reference.mp4"
  }
}'

# Copy data.taskId from the response into TASK_ID, then poll the status.
TASK_ID="TASK_ID_FROM_RESPONSE"
curl "https://api.spicyapi.ai/api/v1/jobs/recordInfo?taskId=$TASK_ID" \
  -H "Authorization: Bearer $SPICY_API_KEY"

Generated from this model’s input schema — the same one the API validates every request against.

Input parameters

Place these fields inside the request body’s input object. Names and types match the API. Do not assume a default when none is specified.

video_urlstringRequired

The source clip. Its motion and timing carry over; the result keeps its shape and is never longer than it. It must be a video: an image link is not rejected and returns a one-frame clip that is still billed.

Default
Not specified
Constraints
minLength:1
format:"uri"
contentMediaType:["video/mp4","video/webm","video/quicktime"]
promptstringRequired

Required. Describe the whole result (subject, wardrobe, setting, light, style), not just the change. Trigger words first if your LoRA has them.

Default
Not specified
Constraints
minLength:1
seedintegerOptional

Keeps runs comparable while you change one LoRA or one scale at a time. It does not promise an identical result.

Default
Not specified
Constraints
minimum:0
maximum:2147483647
stepsintegerOptional

Denoising steps, 1 to 40, default 30. Fewer steps are faster and softer. No effect on price.

Default
30
Constraints
minimum:1
maximum:40
flow_shiftnumberOptional

Flow-matching timestep shift, 1 to 10. Leave it out to use 3 at 480p and 5 at 720p; change it only when a LoRA author recommends a value. No effect on price.

Default
Not specified
Constraints
minimum:1
maximum:10
guidance_scalenumberOptional

How strictly the clip follows the prompt, 0 to 20, default 5. Raising it while lowering steps gave us oversaturated, artefact-ridden frames. No effect on price.

Default
5
Constraints
minimum:0
maximum:20
lorasarray<object>Optional

Up to three {path, scale} entries trained for Wan 2.1 14B; path is a public direct link to a .safetensors file, scale runs from 0 to 4 (1 by default). Loading LoRAs does not change the price.

Default
[]
Constraints
maxItems:3
duration_secondsintegerOptionalAffects price

5 (the default) or 10. The result is never longer than the source, but 10 is billed at the 10-second rate, so use it only for sources of 10 seconds or more. Other lengths are rejected.

Default
5
Allowed values
510
strengthnumberOptional

How far to move from the source, 0.1 to 1, default 0.9. In our test 0.9 redrew the clip and 0.5 returned it almost unchanged. No effect on price.

Default
0.9
Constraints
minimum:0.1
maximum:1
resolutionstringOptionalAffects price

480p (the default) or 720p. 720p costs more per clip and takes longer; the shape follows the source.

Default
"480p"
Allowed values
"480p""720p"
negative_promptstringOptional

What to keep out of the clip, such as blur, extra fingers, text or watermarks. Optional, no effect on price.

Default
Not specified

Track the task

HTTP 202 means the task was accepted, not completed. Save the returned taskId and query that task. Do not create another task while waiting for its result.

Accepted response
HTTP/1.1 202 Accepted
Location: /api/v1/jobs/recordInfo?taskId=job_01k3m8x9q2z4v7n5p6r8s0t1w3

{
  "code": 200,
  "msg": "success",
  "request_id": "req_example_create",
  "data": {
    "taskId": "job_01k3m8x9q2z4v7n5p6r8s0t1w3",
    "state": "queued",
    "estimatedCost": "0.750000"
  }
}

The accepted response includes the estimate so your app can show the same amount in task history and billing.

Read the job
curl --get "https://api.spicyapi.ai/api/v1/jobs/recordInfo" \
  --data-urlencode "taskId=$TASK_ID" \
  -H "Authorization: Bearer $SPICY_API_KEY"

Start polling at about 2 seconds and gradually increase the interval. Stop at a terminal state. After a connection failure, query the original taskId. Retry creation only with the original idempotency key and body.

Or let the callback find you
import { verifyWebhook } from "@spicyapi/sdk";

// express.raw keeps the bytes we signed; express.json never matches.
app.post("/hooks/spicy", express.raw({ type: "application/json" }), (req, res) => {
  const { payload } = verifyWebhook({
    rawBody: req.body,
    timestamp: req.header("X-Webhook-Timestamp"),
    signature: req.header("X-Webhook-Signature"),
    payloadVersion: Number(req.header("X-Webhook-Payload-Version")),
    secret: process.env.SPICY_WEBHOOK_SECRET,
  });
  res.status(200).end();
  void handleFinishedTask(payload);
});

Pass callBackUrl when you create the task and the finished record is POSTed to you — no polling loop at all. Every delivery carries X-Webhook-Timestamp, X-Webhook-Signature and X-Webhook-Payload-Version. The signature is a base64 HMAC-SHA256 over taskId.timestamp.sha256(body), so it must be checked against the raw bytes: parsing the JSON and re-serialising it changes them and the check will fail. Failed deliveries are retried, so the same taskId can arrive twice — make the handler idempotent. Answer 2xx first and do the work afterwards; a slow handler is treated as a failed delivery.

Read the result

Consume output only when state is succeeded. On failure, use errorCode, errorMessage and request_id to investigate. Example costs and states do not represent an actual bill.

Completed response example
{
  "code": 200,
  "msg": "success",
  "request_id": "req_example_record",
  "data": {
    "taskId": "job_01k3m8x9q2z4v7n5p6r8s0t1w3",
    "model": "alibaba/wan-2.1-lora/video-edit",
    "state": "succeeded",
    "output": {
      "assets": [
        {
          "key": "tasks/2026/08/28/job_01k3m8x9q2z4v7n5p6r8s0t1w3/3f7a1c9e5b2d48f0a6c1e3d5b7f9a1c3.mp4",
          "mime": "video/mp4",
          "url": "https://example.r2.cloudflarestorage.com/results/job_01k3m8x9q2z4v7n5p6r8s0t1w3/result.mp4?X-Amz-Signature=SIGNATURE_FROM_RESPONSE",
          "expiresAt": "2026-08-28T12:20:08.000Z"
        }
      ]
    },
    "cost": "0.750000",
    "settled": true,
    "createdAt": "2026-08-28T12:00:00Z",
    "completedAt": "2026-08-28T12:00:30Z"
  }
}

For each available asset, open or download assets[].url directly without an API Authorization header. The signed URL expires at expiresAt; poll the task again to refresh it while the asset remains within its retention period. A pending or unavailable asset has no URL. Treat signed URLs as private.

SDKs & integrations

Use SpicyAPI in your app, terminal, AI assistant or visual workflow. Choose a setup guide below.

SDKs
TypeScript · Python · Go · PHP · Java
CLI
Terminal commands and automation scripts.
MCP
Claude Code · Cursor · Codex
Agent Skill
Reusable instructions for your AI assistant.
n8n
Self-hosted community nodes and importable HTTP Request templates for n8n Cloud.
ComfyUI
Image, video and audio workflows on a node canvas.

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Browse ready-to-use workflows

Use it in ComfyUI

Install the SpicyAPI nodes from ComfyUI Manager or with the command below, then search for Wan 2.1 LoRA · Video to Video on the canvas. The node has the same options as this page and shows its price before it runs.

cd ComfyUI/custom_nodes
git clone https://github.com/spicyapi-ai/comfyui-spicyapi
Workflow examplesSetup guideSource on GitHub