diff --git a/app/chain/download.py b/app/chain/download.py
index df9aa49c..cfef34c0 100644
--- a/app/chain/download.py
+++ b/app/chain/download.py
@@ -332,7 +332,7 @@ class DownloadChain(ChainBase):
                         continue
                 # 只处理视频格式
                 if not Path(file).suffix \
-                        or Path(file).suffix not in settings.RMT_MEDIAEXT:
+                        or Path(file).suffix.lower() not in settings.RMT_MEDIAEXT:
                     continue
                 files_to_add.append({
                     "download_hash": _hash,
diff --git a/app/helper/torrent.py b/app/helper/torrent.py
index fcbc806f..313471d7 100644
--- a/app/helper/torrent.py
+++ b/app/helper/torrent.py
@@ -287,7 +287,7 @@ class TorrentHelper(metaclass=Singleton):
             if not file:
                 continue
             file_path = Path(file)
-            if file_path.suffix not in settings.RMT_MEDIAEXT:
+            if not file_path.suffix or file_path.suffix.lower() not in settings.RMT_MEDIAEXT:
                 continue
             # 只使用文件名识别
             meta = MetaInfo(file_path.stem)