# Wan 2.5 Preview (Image-to-Video) {% columns %} {% column width="66.66666666666666%" %} {% hint style="info" %} This documentation is valid for the following list of our models: * `alibaba/wan2.5-i2v-preview` {% endhint %} {% endcolumn %} {% column width="33.33333333333334%" %} Try in Playground {% endcolumn %} {% endcolumns %} This text-to-video model generates videos up to 1080p and can voice a character with full lip-sync by providing dialogue directly in the `prompt` parameter. In addition to the features of the [Wan 2.5 Preview (Text-to-Video)](https://docs.aimlapi.com/api-references/video-models/alibaba-cloud/wan-2.5-preview-text-to-video) model, it also supports uploading a reference image, which may depict the character to be animated or the surrounding scene. ## Setup your API Key If you don’t have an API key for the AI/ML API yet, feel free to use our [Quickstart guide](https://docs.aimlapi.com/quickstart/setting-up). ## How to Make a Call
Step-by-Step Instructions Generating a video using this model involves sequentially calling two endpoints: * The first one is for creating and sending a video generation task to the server (returns a generation ID). * The second one is for requesting the generated video from the server using the generation ID received from the first endpoint. Below, you can find two corresponding API schemas and examples for both endpoint calls.
## API Schemas {% hint style="success" %} Now, all of our API schemas for video models use our new universal short URL — `https://api.aimlapi.com/v2/video/generations`.\ However, you can still call this model using the legacy URL that includes the vendor name. {% endhint %} ### Video Generation This endpoint creates and sends a video generation task to the server — and returns a generation ID. ## POST /v2/video/generations > ```json {"openapi":"3.0.0","info":{"title":"AIML API","version":"1.0.0"},"servers":[{"url":"https://api.aimlapi.com"}],"paths":{"/v2/video/generations":{"post":{"operationId":"_v2_video_generations","requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"model":{"type":"string","enum":["alibaba/wan2.5-i2v-preview"]},"prompt":{"type":"string","description":"The text description of the scene, subject, or action to generate in the video."},"image_url":{"type":"string","format":"uri","description":"A direct link to an online image or a Base64-encoded local image that will serve as the visual base or the first frame for the video."},"resolution":{"type":"string","enum":["480p","720p","1080p"],"default":"1080p","description":"An enumeration where the short side of the video frame determines the resolution."},"aspect_ratio":{"type":"string","enum":["16:9","9:16","1:1"],"default":"16:9","description":"The aspect ratio of the generated video."},"duration":{"type":"integer","description":"The length of the output video in seconds.","enum":[5,10],"default":"10"},"negative_prompt":{"type":"string","description":"The description of elements to avoid in the generated video."},"seed":{"type":"integer","description":"Varying the seed integer is a way to get different results for the same other request parameters. Using the same value for an identical request will produce similar results. If unspecified, a random number is chosen."},"enhance_prompt":{"type":"boolean","default":true,"description":"Whether to enable prompt expansion."}},"required":["model","prompt","image_url"],"title":"alibaba/wan2.5-i2v-preview"}}}},"responses":{"200":{"content":{"application/json":{"schema":{"type":"object","properties":{"id":{"type":"string","description":"The ID of the generated video."},"status":{"type":"string","enum":["queued","generating","completed","error"],"description":"The current status of the generation task."},"video":{"type":"object","nullable":true,"properties":{"url":{"type":"string","format":"uri","description":"The URL where the file can be downloaded from."}},"required":["url"]},"error":{"type":"object","nullable":true,"properties":{"name":{"type":"string"},"message":{"type":"string"}},"required":["name","message"],"description":"Description of the error, if any."},"meta":{"type":"object","nullable":true,"properties":{"usage":{"type":"object","nullable":true,"properties":{"credits_used":{"type":"number","description":"The number of tokens consumed during generation."}},"required":["credits_used"]}},"description":"Additional details about the generation."}},"required":["id","status"]}}}}}}}}} ``` ### Fetch the video After sending a request for video generation, this task is added to the queue. This endpoint lets you check the status of a video generation task using its `id`, obtained from the endpoint described above.\ If the video generation task status is `completed`, the response will include the final result — with the generated video URL and additional metadata. ## GET /v2/video/generations > ```json {"openapi":"3.0.0","info":{"title":"AIML API","version":"1.0.0"},"servers":[{"url":"https://api.aimlapi.com"}],"security":[{"access-token":[]}],"components":{"securitySchemes":{"access-token":{"scheme":"bearer","bearerFormat":"","type":"http","description":"Bearer key","in":"header"}}},"paths":{"/v2/video/generations":{"get":{"operationId":"_v2_video_generations","parameters":[{"name":"generation_id","required":true,"in":"query","schema":{"type":"string"}}],"responses":{"200":{"content":{"application/json":{"schema":{"type":"object","properties":{"id":{"type":"string","description":"The ID of the generated video."},"status":{"type":"string","enum":["queued","generating","completed","error"],"description":"The current status of the generation task."},"video":{"type":"object","nullable":true,"properties":{"url":{"type":"string","format":"uri","description":"The URL where the file can be downloaded from."}},"required":["url"]},"error":{"type":"object","nullable":true,"properties":{"name":{"type":"string"},"message":{"type":"string"}},"required":["name","message"],"description":"Description of the error, if any."},"meta":{"type":"object","nullable":true,"properties":{"usage":{"type":"object","nullable":true,"properties":{"credits_used":{"type":"number","description":"The number of tokens consumed during generation."}},"required":["credits_used"]}},"description":"Additional details about the generation."}},"required":["id","status"]}}}}}}}}} ``` ## Full Example: Generating and Retrieving the Video From the Server The code below creates a video generation task, then automatically polls the server every **10** seconds until it finally receives the video URL. {% tabs %} {% tab title="Python" %} {% code overflow="wrap" %} ```python import requests import time # replace with your actual AI/ML API key api_key = "" base_url = "https://api.aimlapi.com/v2" # Creating and sending a video generation task to the server def generate_video(): url = f"{base_url}/generate/video/alibaba/generation" headers = { "Authorization": f"Bearer {api_key}", } data = { "model": "alibaba/wan2.5-i2v-preview", "prompt": '''Mona Lisa nervously puts on glasses with her hands and asks her off-screen friend to the left: ‘Do they suit me?’ She then tilts her head slightly to one side and then the other, so the unseen friend can better judge.''', "image_url": "https://s2-111386.kwimgs.com/bs2/mmu-aiplatform-temp/kling/20240620/1.jpeg", } response = requests.post(url, json=data, headers=headers) if response.status_code >= 400: print(f"Error: {response.status_code} - {response.text}") else: response_data = response.json() print(response_data) return response_data # Requesting the result of the task from the server using the generation_id def get_video(gen_id): url = f"{base_url}/generate/video/alibaba/generation" params = { "generation_id": gen_id, } headers = { "Authorization": f"Bearer {api_key}", "Content-Type": "application/json" } response = requests.get(url, params=params, headers=headers) return response.json() def main(): # Running video generation and getting a task id gen_response = generate_video() gen_id = gen_response.get("id") print("Generation ID: ", gen_id) # Trying to retrieve the video from the server every 10 sec if gen_id: start_time = time.time() timeout = 600 while time.time() - start_time < timeout: response_data = get_video(gen_id) if response_data is None: print("Error: No response from API") break status = response_data.get("status") print("Status:", status) if status == "waiting" or status == "active" or status == "queued" or status == "generating": print("Still waiting... Checking again in 10 seconds.") time.sleep(10) else: print("Processing complete:\n", response_data) return response_data print("Timeout reached. Stopping.") return None if __name__ == "__main__": main() ``` {% endcode %} {% endtab %} {% tab title="JavaScript" %} {% code overflow="wrap" %} ```javascript const https = require("https"); const { URL } = require("url"); // Replace with your actual AI/ML API key const apiKey = ""; const baseUrl = "https://api.aimlapi.com/v2"; // Creating and sending a video generation task to the server function generateVideo(callback) { const data = JSON.stringify({ model: "alibaba/wan2.5-i2v-preview", prompt: `Mona Lisa nervously puts on glasses with her hands and asks her off-screen friend to the left: ‘Do they suit me?’ She then tilts her head slightly to one side and then the other, so the unseen friend can better judge.`, image_url: "https://s2-111386.kwimgs.com/bs2/mmu-aiplatform-temp/kling/20240620/1.jpeg", }); const url = new URL(`${baseUrl}/generate/video/alibaba/generation`); const options = { method: "POST", headers: { "Authorization": `Bearer ${apiKey}`, "Content-Type": "application/json", "Content-Length": Buffer.byteLength(data), }, }; const req = https.request(url, options, (res) => { let body = ""; res.on("data", (chunk) => body += chunk); res.on("end", () => { if (res.statusCode >= 400) { console.error(`Error: ${res.statusCode} - ${body}`); callback(null); } else { const parsed = JSON.parse(body); callback(parsed); } }); }); req.on("error", (err) => console.error("Request error:", err)); req.write(data); req.end(); } // Requesting the result of the task from the server using the generation_id function getVideo(genId, callback) { const url = new URL(`${baseUrl}/generate/video/alibaba/generation`); url.searchParams.append("generation_id", genId); const options = { method: "GET", headers: { "Authorization": `Bearer ${apiKey}`, "Content-Type": "application/json", }, }; const req = https.request(url, options, (res) => { let body = ""; res.on("data", (chunk) => body += chunk); res.on("end", () => { const parsed = JSON.parse(body); callback(parsed); }); }); req.on("error", (err) => console.error("Request error:", err)); req.end(); } // Initiates video generation and checks the status every 10 seconds until completion or timeout function main() { generateVideo((genResponse) => { if (!genResponse || !genResponse.id) { console.error("Failed to start generation"); return; } const genId = genResponse.id; console.log("Gen_ID:", genId); const startTime = Date.now(); const timeout = 600000; const checkStatus = () => { if (Date.now() - startTime > timeout) { console.log("Timeout reached. Stopping."); return; } getVideo(genId, (responseData) => { if (!responseData) { console.error("Error: No response from API"); return; } const status = responseData.status; console.log("Status:", status); if (["waiting", "active", "queued", "generating"].includes(status)) { console.log("Still waiting... Checking again in 10 seconds."); setTimeout(checkStatus, 10000); } else { console.log("Processing complete:\n", responseData); } }); }; checkStatus(); }); } main(); ``` {% endcode %} {% endtab %} {% endtabs %}
Response {% code overflow="wrap" %} ```json5 Generation ID: c8a198bb-8b06-4640-91ee-f96caa792390:alibaba/wan2.5-i2v-preview Status: generating Still waiting... Checking again in 10 seconds. Status: generating Still waiting... Checking again in 10 seconds. Status: generating Still waiting... Checking again in 10 seconds. Status: generating Still waiting... Checking again in 10 seconds. Status: generating Still waiting... Checking again in 10 seconds. Status: completed Processing complete:\n {'id': 'c8a198bb-8b06-4640-91ee-f96caa792390:alibaba/wan2.5-i2v-preview', 'status': 'completed', 'video': {'url': 'https://dashscope-result-sh.oss-cn-shanghai.aliyuncs.com/1d/15/20250927/1080b7c5/c8a198bb-8b06-4640-91ee-f96caa792390.mp4?Expires=1759009739&OSSAccessKeyId=LTAI5tKPD3TMqf2Lna1fASuh&Signature=3oH7JKM54LL2LwnoRKvTyyhvWeM%3D'}} ``` {% endcode %}
**Processing time**: \~3 min 40 sec. **Generated video** (786x1172, with sound): {% embed url="" fullWidth="false" %}