Update app.py

app.py

@@ -16,16 +16,16 @@ def get_subtitle(url, lang='en'):
         'subtitleslangs': [lang],
         'skip_download': True,
     }
-    info_dict = yt_dlp.extract_info(url, download=True)
-    video_id = info_dict.get("id", None)
-    if video_id is None:
-        return None
-    subtitle_file = f"{video_id}.{lang}.vtt"
-    if not os.path.exists(subtitle_file):
-        return None
-
-    subtitle_text = subprocess.check_output(['webvtt-to-text', subtitle_file]).decode('utf-8')
-    return subtitle_text
+    with yt_dlp.YoutubeDL(ydl_opts) as ydl:
+        info_dict = ydl.extract_info(url, download=True)
+        video_id = info_dict.get("id", None)
+        if video_id is None:
+            return None
+        subtitle_file = f"{video_id}.{lang}.vtt"
+        if  os.path.exists(subtitle_file):
+            subtitle_text = subprocess.check_output(['webvtt-to-text', subtitle_file]).decode('utf-8')
+            return subtitle_text
+    return None
 
 def download_audio(video_url, quality: str = '128', speed: float = None):
     ydl_opts = {