上传main

ffmpeg_utils.py

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+import os
+import uuid
+import subprocess
+import requests
+import tempfile
+import shutil
+import logging
+import threading
+import time
+from contextlib import contextmanager
+
+UPLOAD_FOLDER = 'temp_files'
+
+@contextmanager
+def temp_directory(dir=None):
+    temp_dir = tempfile.mkdtemp(dir=dir)
+    try:
+        yield temp_dir
+    finally:
+        # 不再在这里自动删除临时目录
+        pass
+
+def download_file(url, temp_dir):
+    try:
+        headers = {
+            'User-Agent': 'Mozilla/5.0',
+            'Accept': '*/*'
+        }
+        
+        logging.info(f"开始从URL下载文件: {url}")
+        response = requests.get(url, headers=headers, stream=True, timeout=30)
+        response.raise_for_status()
+        
+        file_path = os.path.join(temp_dir, 'input_audio')
+        
+        with open(file_path, 'wb') as f:
+            for chunk in response.iter_content(chunk_size=8192):
+                if chunk:
+                    f.write(chunk)
+        
+        file_size = os.path.getsize(file_path)
+        if file_size < 1024:
+            error_msg = f"下载的文件太小(仅{file_size}字节)，可能无效"
+            logging.error(error_msg)
+            raise Exception(error_msg)
+            
+        logging.info(f"文件下载成功，保存到: {file_path} (大小: {file_size}字节)")
+        return file_path
+    except Exception as e:
+        logging.error(f"从 {url} 下载文件时出错: {e}")
+        raise
+
+def execute_ffmpeg(input_path, output_path, ffmpeg_args):
+    try:
+        filtered_args = [arg for arg in ffmpeg_args if not (arg.lower() in ['-i', '-input'] or 
+                                                            (ffmpeg_args.index(arg) > 0 and ffmpeg_args[ffmpeg_args.index(arg) - 1].lower() == '-i'))]
+        
+        cmd = ['lib/ffmpeg/bin/ffmpeg', '-i', input_path] + filtered_args + [output_path]
+        logging.info(f"执行FFmpeg命令: {' '.join(cmd)}")
+        
+        result = subprocess.run(
+            cmd,
+            stdout=subprocess.PIPE,
+            stderr=subprocess.PIPE,
+            universal_newlines=True,
+            encoding='utf-8',
+            errors='replace'
+        )
+        
+        if result.returncode != 0:
+            error_msg = f"FFmpeg处理失败，返回码: {result.returncode}, 错误: {result.stderr}"
+            logging.error(error_msg)
+            raise Exception(error_msg)
+            
+        logging.info("FFmpeg处理成功完成")
+        return True
+    except Exception as e:
+        logging.error(f"执行FFmpeg时出错: {e}")
+        raise
+
+
+def process_ffmpeg(data, file_registry, file_lock):
+    try:
+        temp_dir = tempfile.mkdtemp(dir=UPLOAD_FOLDER)
+        logging.info(f"创建临时目录: {temp_dir}")
+        
+        input_url = data.get('input_url')
+        ffmpeg_args = data.get('args', [])
+        input_path = download_file(input_url, temp_dir)
+        
+        output_id = str(uuid.uuid4())[:8]
+        output_format = data.get('output_format', 'mp4')
+        output_filename = f"{output_id}.{output_format}"
+        output_path = os.path.join(temp_dir, output_filename)
+        
+        execute_ffmpeg(input_path, output_path, ffmpeg_args)
+        
+        with file_lock:
+            file_registry[output_id] = {
+                'path': os.path.abspath(output_path),
+                'filename': output_filename,
+                'last_access': time.time(),
+                'download_count': 0
+            }
+            logging.info(f"已注册新文件ID: {output_id}, 路径: {output_path}")
+        
+        # 返回临时目录路径以便在主函数中删除
+        return {
+            'status': 'success',
+            'download_url': f"http://ffmpeg.liulikeji.cn/download/{output_id}/{output_filename}",
+            'file_id': output_id,
+            'temp_dir': temp_dir  # 返回临时目录路径
+        }
+        
+    except Exception as e:
+        logging.error(f"处理过程中出错: {e}")
+        return {'error': str(e)}