diff --git a/services/storage.py b/services/storage.py
index ca31313..6cd9b22 100644
--- a/services/storage.py
+++ b/services/storage.py
@@ -15,6 +15,29 @@ import requests
 logger = logging.getLogger(__name__)
 
 
+# 文件扩展名到 Content-Type 的映射
+_CONTENT_TYPE_MAP = {
+    '.mp4': 'video/mp4',
+    '.aac': 'audio/aac',
+    '.ts': 'video/mp2t',
+    '.m4a': 'audio/mp4',
+}
+
+
+def _get_content_type(file_path: str) -> str:
+    """
+    根据文件扩展名获取 Content-Type
+
+    Args:
+        file_path: 文件路径
+
+    Returns:
+        Content-Type 字符串
+    """
+    ext = os.path.splitext(file_path)[1].lower()
+    return _CONTENT_TYPE_MAP.get(ext, 'application/octet-stream')
+
+
 def _apply_http_replace_map(url: str) -> str:
     """
     应用 HTTP_REPLACE_MAP 环境变量替换 URL
@@ -69,7 +92,8 @@ def upload_file(url: str, file_path: str, max_retries: int = 5, timeout: int = 6
 
     # 应用 HTTP_REPLACE_MAP 替换 URL
     http_url = _apply_http_replace_map(url)
-    logger.debug(f"Uploading to: {http_url}")
+    content_type = _get_content_type(file_path)
+    logger.info(f"Uploading to: {http_url} (Content-Type: {content_type})")
 
     retries = 0
     while retries < max_retries:
@@ -80,7 +104,7 @@ def upload_file(url: str, file_path: str, max_retries: int = 5, timeout: int = 6
                     data=f,
                     stream=True,
                     timeout=timeout,
-                    headers={"Content-Type": "application/octet-stream"}
+                    headers={"Content-Type": content_type}
                 ) as response:
                     response.raise_for_status()
                     logger.info(f"Upload succeeded: {file_path}")