Referencia de API de Wan - imagen a video - primer fotograma (2.1-2.6)

import base64
import os
import mimetypes
import dashscope
from dashscope.v2 import DashScopeError

# La siguiente configuración corresponde a la región de Singapur. Sustituya {WorkspaceId} por el ID real de su espacio de trabajo. El valor de region varía según la región.
# Para consultar los endpoints de cada región, véase https://www.alibabacloud.com/help/model-studio/image-to-video-api-reference
client = dashscope.Client(
    # Si la variable de entorno no está configurada, establezca directamente su clave de API de Model Studio: api_key="sk-xxx"
    # Para obtener una clave de API, véase https://www.alibabacloud.com/help/model-studio/get-api-key
    api_key=os.getenv("DASHSCOPE_API_KEY"),
    workspace="{WorkspaceId}",
    region="ap-southeast-1",
)

# --- Función auxiliar para la codificación Base64 ---
# Formato: data:{MIME_type};base64,{base64_data}
def encode_file(file_path):
    mime_type, _ = mimetypes.guess_type(file_path)
    if not mime_type or not mime_type.startswith("image/"):
        raise ValueError("Formato de imagen no admitido o no reconocido")
    with open(file_path, "rb") as image_file:
        encoded_string = base64.b64encode(image_file.read()).decode('utf-8')
    return f"data:{mime_type};base64,{encoded_string}"

"""
Métodos de entrada de imagen:
A continuación se muestran tres formas de proporcionar una imagen. Elija una.

1. URL pública: ideal para imágenes que ya son de acceso público.
2. Archivo local: adecuado para desarrollo y pruebas locales.
3. Codificación Base64: ideal para imágenes privadas o cuando los datos deben transmitirse de forma segura.
"""

# [Método 1] Usar una URL de imagen accesible públicamente
# Ejemplo: usar una URL de imagen pública
img_url = "https://help-static-aliyun-doc.aliyuncs.com/file-manage-files/zh-CN/20250925/wpimhv/rap.png"

# [Método 2] Usar un archivo local (admite rutas absolutas y relativas)
# Formato: file:// + ruta del archivo
# Ejemplo (ruta absoluta):
# img_url = "file://" + "/path/to/your/img.png"    # Linux/macOS
# img_url = "file://" + "C:/path/to/your/img.png"  # Windows
# Ejemplo (ruta relativa):
# img_url = "file://" + "./img.png"                # Relativa al directorio del script en ejecución

# [Método 3] Usar una imagen codificada en Base64
# img_url = encode_file("./img.png")

# Establezca la URL del audio
audio_url = "https://help-static-aliyun-doc.aliyuncs.com/file-manage-files/zh-CN/20250925/ozwpvi/rap.mp3"

def sample_call_i2v():
    print('please wait...')
    # generate es una llamada de un solo paso (envía la tarea y espera a que finalice) y devuelve un Job completado
    # audio_url / negative_prompt son campos de la sección input que no forman parte de la firma con nombre y se pasan mediante extra_input
    try:
        job = client.videos.generate(model='wan2.6-i2v-flash',
                                     prompt='A scene of urban fantasy art. A dynamic graffiti art character. A boy made of spray paint comes to life from a concrete wall. He raps an English song at high speed while striking a classic, energetic rapper pose. The scene is set under an urban railway bridge at night. The lighting comes from a single street lamp, creating a cinematic atmosphere full of high energy and amazing detail. The audio of the video consists entirely of his rap, with no other dialogue or noise.',
                                     image_url=img_url,
                                     extra_input={'audio_url': audio_url,
                                                  'negative_prompt': ""},
                                     resolution="720P",
                                     duration=10,
                                     prompt_extend=True,
                                     watermark=False,
                                     seed=12345)
        print(job)
        print("video_url:", job.video_url)
    except DashScopeError as e:
        print(f"Código de estado HTTP: {e.status_code}")
        print(f"Código de error: {e.code}")
        print(f"Mensaje de error: {e.message}")
        print("Consulte la documentación: https://www.alibabacloud.com/help/model-studio/developer-reference/error-code")

if __name__ == '__main__':
    sample_call_i2v()

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

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.JsonUtils;
import com.alibaba.dashscope.utils.Constants;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Base64;
import java.util.HashMap;
import java.util.Map;

public class Image2Video {

    static {
        // Set the endpoint. This example uses the Singapore region. For other regions, see: https://www.alibabacloud.com/help/model-studio/image-to-video-api-reference
        Constants.baseHttpApiUrl = "https://{WorkspaceId}.ap-southeast-1.maas.aliyuncs.com/api/v1";
    }

    // If the environment variable is not set, replace the following line with your API key from Model Studio: apiKey="sk-xxx"
    // Get your API key: https://www.alibabacloud.com/help/model-studio/get-api-key
    static String apiKey = System.getenv("DASHSCOPE_API_KEY");

    /**
     * Image input methods: Choose one of the following three.
     *
     * 1. Public URL: Ideal for images that are already publicly accessible.
     * 2. Local file: Suitable for local development and testing.
     * 3. Base64 encoding: Best for private images or when data must be securely transmitted.
     */

    // [Method 1] Public URL
    static String imgUrl = "https://help-static-aliyun-doc.aliyuncs.com/file-manage-files/zh-CN/20250925/wpimhv/rap.png";

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

    // [Method 3] Base64 encoding
    // static String imgUrl = Image2Video.encodeFile("/your/path/to/img.png");

    // Set the audio URL
    static String audioUrl = "https://help-static-aliyun-doc.aliyuncs.com/file-manage-files/zh-CN/20250925/ozwpvi/rap.mp3";

    public static void image2video() throws ApiException, NoApiKeyException, InputRequiredException {
        // Set the parameters
        Map<String, Object> parameters = new HashMap<>();
        parameters.put("prompt_extend", true);
        parameters.put("watermark", false);
        parameters.put("seed", 12345);

        VideoSynthesis vs = new VideoSynthesis();
        VideoSynthesisParam param =
                VideoSynthesisParam.builder()
                        .apiKey(apiKey)
                        .model("wan2.6-i2v-flash")
                        .prompt("A scene of urban fantasy art. A dynamic graffiti art character. A boy made of spray paint comes to life from a concrete wall. He raps an English song at high speed while striking a classic, energetic rapper pose. The scene is set under an urban railway bridge at night. The lighting comes from a single street lamp, creating a cinematic atmosphere full of high energy and amazing detail. The audio of the video consists entirely of his rap, with no other dialogue or noise.")
                        .imgUrl(imgUrl)
                        .audioUrl(audioUrl)
                        .duration(10)
                        .parameters(parameters)
                        .resolution("720P")
                        .negativePrompt("")
                        .build();
        System.out.println("please wait...");
        VideoSynthesisResult result = vs.call(param);
        System.out.println(JsonUtils.toJson(result));
    }

     /**
     * Encodes a file into a Base64 string.
     * @param filePath The file path.
     * @return A Base64 string in the format data:{MIME_type};base64,{base64_data}.
     */
    public static String encodeFile(String filePath) {
        Path path = Paths.get(filePath);
        if (!Files.exists(path)) {
            throw new IllegalArgumentException("File does not exist: " + filePath);
        }
        // Detect MIME type
        String mimeType = null;
        try {
            mimeType = Files.probeContentType(path);
        } catch (IOException e) {
            throw new IllegalArgumentException("Cannot detect file type: " + filePath);
        }
        if (mimeType == null || !mimeType.startsWith("image/")) {
            throw new IllegalArgumentException("Unsupported or unrecognized image format");
        }
        // Read file content and encode
        byte[] fileBytes = null;
        try{
            fileBytes = Files.readAllBytes(path);
        } catch (IOException e) {
            throw new IllegalArgumentException("Cannot read file content: " + filePath);
        }

        String encodedString = Base64.getEncoder().encodeToString(fileBytes);
        return "data:" + mimeType + ";base64," + encodedString;
    }

    public static void main(String[] args) {
        try {
            image2video();
        } catch (ApiException | NoApiKeyException | InputRequiredException e) {
            System.out.println(e.getMessage());
        }
        System.exit(0);
    }
}