AI 视频扩展回调

from flask import Flask, request, jsonify
import requests
import os

app = Flask(__name__)

@app.route('/runway-extend-callback', methods=['POST'])
def handle_callback():
    data = request.json
    
    code = data.get('code')
    msg = data.get('msg')
    callback_data = data.get('data', {})
    task_id = callback_data.get('task_id')
    
    print(f"收到 Runway 视频扩展回调:")
    print(f"任务 ID: {task_id}")
    print(f"状态: {code}, 消息: {msg}")
    
    if code == 200:
        # 视频扩展成功
        video_id = callback_data.get('video_id')
        video_url = callback_data.get('video_url')
        image_url = callback_data.get('image_url')
        
        print("视频扩展成功！")
        print(f"视频 ID: {video_id}")
        print(f"视频 URL: {video_url}")
        print(f"封面 URL: {image_url}")
        
        # 下载视频文件
        if video_url:
            try:
                video_filename = f"runway_extend_{task_id}.mp4"
                download_file(video_url, video_filename)
                print("视频下载成功")
            except Exception as e:
                print(f"视频下载失败: {e}")
        
        # 下载封面图片
        if image_url:
            try:
                image_filename = f"runway_extend_cover_{task_id}.png"
                download_file(image_url, image_filename)
                print("封面下载成功")
            except Exception as e:
                print(f"封面下载失败: {e}")
                
    else:
        # 视频扩展失败
        print(f"Runway 视频扩展失败: {msg}")
        
        # 处理特定错误类型
        if code == 400:
            print("客户端错误 - 检查输入参数和内容")
            if '不当内容' in msg:
                print("内容审核失败 - 请替换图像或视频")
            elif '格式不正确' in msg:
                print("格式错误 - 请检查图像格式")
            elif '并发生成限制' in msg:
                print("并发限制 - 请等待或升级会员")
            elif 'NSFW内容' in msg:
                print("内容违规 - 请修改提示词")
        elif code == 500:
            print("服务器错误 - 请稍后重试")
    
    # 返回 200 状态码确认收到回调
    return jsonify({'code': 200, 'msg': 'success'}), 200

def download_file(url, filename):
    """从 URL 下载文件并保存到本地"""
    response = requests.get(url, stream=True)
    response.raise_for_status()
    
    os.makedirs('downloads', exist_ok=True)
    filepath = os.path.join('downloads', filename)
    
    with open(filepath, 'wb') as f:
        for chunk in response.iter_content(chunk_size=8192):
            f.write(chunk)

if __name__ == '__main__':
    app.run(host='0.0.0.0', port=3000)

<?php
header('Content-Type: application/json');

// 获取 POST 数据
$input = file_get_contents('php://input');
$data = json_decode($input, true);

$code = $data['code'] ?? null;
$msg = $data['msg'] ?? '';
$callbackData = $data['data'] ?? [];
$taskId = $callbackData['task_id'] ?? '';

error_log("收到 Runway 视频扩展回调:");
error_log("任务 ID: $taskId");
error_log("状态: $code, 消息: $msg");

if ($code === 200) {
    // 视频扩展成功
    $videoId = $callbackData['video_id'] ?? '';
    $videoUrl = $callbackData['video_url'] ?? '';
    $imageUrl = $callbackData['image_url'] ?? '';
    
    error_log("视频扩展成功！");
    error_log("视频 ID: $videoId");
    error_log("视频 URL: $videoUrl");
    error_log("封面 URL: $imageUrl");
    
    // 下载视频文件
    if (!empty($videoUrl)) {
        try {
            $videoFilename = "runway_extend_{$taskId}.mp4";
            downloadFile($videoUrl, $videoFilename);
            error_log("视频下载成功");
        } catch (Exception $e) {
            error_log("视频下载失败: " . $e->getMessage());
        }
    }
    
    // 下载封面图片
    if (!empty($imageUrl)) {
        try {
            $imageFilename = "runway_extend_cover_{$taskId}.png";
            downloadFile($imageUrl, $imageFilename);
            error_log("封面下载成功");
        } catch (Exception $e) {
            error_log("封面下载失败: " . $e->getMessage());
        }
    }
    
} else {
    // 视频扩展失败
    error_log("Runway 视频扩展失败: $msg");
    
    // 处理特定错误类型
    if ($code === 400) {
        error_log("客户端错误 - 检查输入参数和内容");
        if (strpos($msg, '不当内容') !== false) {
            error_log("内容审核失败 - 请替换图像或视频");
        } elseif (strpos($msg, '格式不正确') !== false) {
            error_log("格式错误 - 请检查图像格式");
        } elseif (strpos($msg, '并发生成限制') !== false) {
            error_log("并发限制 - 请等待或升级会员");
        } elseif (strpos($msg, 'NSFW内容') !== false) {
            error_log("内容违规 - 请修改提示词");
        }
    } elseif ($code === 500) {
        error_log("服务器错误 - 请稍后重试");
    }
}

// 返回 200 状态码确认收到回调
http_response_code(200);
echo json_encode(['code' => 200, 'msg' => 'success']);

function downloadFile($url, $filename) {
    $downloadDir = 'downloads';
    if (!is_dir($downloadDir)) {
        mkdir($downloadDir, 0755, true);
    }
    
    $filepath = $downloadDir . '/' . $filename;
    
    $fileContent = file_get_contents($url);
    if ($fileContent === false) {
        throw new Exception("从 URL 下载文件失败");
    }
    
    $result = file_put_contents($filepath, $fileContent);
    if ($result === false) {
        throw new Exception("保存文件到本地失败");
    }
}
?>