Wan -image-to-video-first and last frames API reference(2.2)

import os
from http import HTTPStatus
# DashScope SDK >= 1.23.4
from dashscope import VideoSynthesis
import dashscope

dashscope.base_http_api_url = 'https://{WorkspaceId}.ap-southeast-1.maas.aliyuncs.com/api/v1'

# Get the DashScope API key (which is your Model Studio API key) from an environment variable.
api_key = os.getenv("DASHSCOPE_API_KEY")

# ========== Image input method (choose one) ==========
# [Method 1] Use a public image URL
first_frame_url = "https://wanx.alicdn.com/material/20250318/first_frame.png"
last_frame_url = "https://wanx.alicdn.com/material/20250318/last_frame.png"

# [Method 2] Use a local file path (file:// + file path)
# Use an absolute path:
# first_frame_url = "file://" + "/path/to/your/first_frame.png"  # Linux/macOS
# last_frame_url = "file://" + "C:/path/to/your/last_frame.png"  # Windows
# Or use a relative path:
# first_frame_url = "file://" + "./first_frame.png"              # Use your actual path.
# last_frame_url = "file://" + "./last_frame.png"                # Use your actual path.

def sample_async_call_kf2v():
    print('please wait...')
    rsp = VideoSynthesis.async_call(api_key=api_key,
                                    model="wan2.2-kf2v-flash",
                                    prompt="Realistic style, a small black cat looks up at the sky curiously, the camera gradually rises from eye level, and finally captures its curious gaze from a top-down view.",
                                    first_frame_url=first_frame_url,
                                    last_frame_url=last_frame_url,
                                    resolution="720P",
                                    prompt_extend=True)
    print(rsp)
    if rsp.status_code == HTTPStatus.OK:
        print("task_id: %s" % rsp.output.task_id)
    else:
        print('Failed, status_code: %s, code: %s, message: %s' %
              (rsp.status_code, rsp.code, rsp.message))

    # Get the task information, including the task status.
    status = VideoSynthesis.fetch(task=rsp, api_key=api_key)
    if status.status_code == HTTPStatus.OK:
        print(status.output.task_status)  # check the task status
    else:
        print('Failed, status_code: %s, code: %s, message: %s' %
              (status.status_code, status.code, status.message))

    # Wait for the task to complete. This method polls the fetch endpoint at intervals until the task is finished.
    rsp = VideoSynthesis.wait(task=rsp, api_key=api_key)
    print(rsp)
    if rsp.status_code == HTTPStatus.OK:
        print(rsp.output.video_url)
    else:
        print('Failed, status_code: %s, code: %s, message: %s' %
              (rsp.status_code, rsp.code, rsp.message))

if __name__ == '__main__':
    sample_async_call_kf2v()

// Copyright (c) Alibaba, Inc. and its affiliates.

// DashScope SDK >= 2.20.1
import com.alibaba.dashscope.aigc.videosynthesis.VideoSynthesis;
import com.alibaba.dashscope.aigc.videosynthesis.VideoSynthesisParam;
import com.alibaba.dashscope.aigc.videosynthesis.VideoSynthesisResult;
import com.alibaba.dashscope.exception.ApiException;
import com.alibaba.dashscope.exception.InputRequiredException;
import com.alibaba.dashscope.exception.NoApiKeyException;
import com.alibaba.dashscope.utils.Constants;
import com.alibaba.dashscope.utils.JsonUtils;
import java.util.HashMap;
import java.util.Map;

public class Kf2vAsync {

    static {
        Constants.baseHttpApiUrl = "https://{WorkspaceId}.ap-southeast-1.maas.aliyuncs.com/api/v1";
    }

    // Get the DashScope API key (which is your Model Studio API key) from an environment variable.
    static String apiKey = System.getenv("DASHSCOPE_API_KEY");

    /**
     * Image input method (choose one):
     *
     * [Method 1] Public URL
     */
    static String firstFrameUrl = "https://wanx.alicdn.com/material/20250318/first_frame.png";
    static String lastFrameUrl = "https://wanx.alicdn.com/material/20250318/last_frame.png";

    /**
     * [Method 2] Local file path (file://+absolute path or file:///+absolute path)
     */
    // static String firstFrameUrl = "file://" + "/your/path/to/first_frame.png";   // Linux/macOS
    // static String lastFrameUrl = "file:///" + "C:/path/to/your/img.png";        // Windows

    public static void asyncCall(){

        // Set parameters.
        Map<String, Object> parameters = new HashMap<>();
        parameters.put("prompt_extend", true);
        parameters.put("resolution", "720P");

        VideoSynthesis videoSynthesis = new VideoSynthesis();
        VideoSynthesisParam param =
                VideoSynthesisParam.builder()
                        .apiKey(apiKey)
                        .model("wan2.2-kf2v-flash")
                        .prompt("Realistic style, a small black cat looks up at the sky curiously, the camera gradually rises from eye level, and finally captures its curious gaze from a top-down view.")
                        .firstFrameUrl(firstFrameUrl)
                        .lastFrameUrl(lastFrameUrl)
                        .parameters(parameters)
                        .build();
        VideoSynthesisResult result = null;
        try {
            // Making an asynchronous call.
            result = videoSynthesis.asyncCall(param);
        } catch (ApiException | NoApiKeyException e){
            throw new RuntimeException(e.getMessage());
        } catch (InputRequiredException e) {
            throw new RuntimeException(e);
        }
        System.out.println(JsonUtils.toJson(result));

        String taskId = result.getOutput().getTaskId();

        System.out.println("taskId=" + taskId);

        try {
            result = videoSynthesis.wait(taskId, apiKey);
        } catch (ApiException | NoApiKeyException e){
            throw new RuntimeException(e.getMessage());
        }
        System.out.println(JsonUtils.toJson(result));
        System.out.println(JsonUtils.toJson(result.getOutput()));
    }

    public static void main(String[] args){
        asyncCall();
    }
}