update the download

app.py

@@ -1,8 +1,6 @@
 import gradio as gr
 import requests
-from pytube import YouTube  # Import pytube
-import os
-import tempfile
+import youtube_dl  # Import youtube_dl
 from typing import Optional
 import json
 import subprocess
@@ -14,17 +12,24 @@ def download_youtube_audio(url: str, output_dir: Optional[str] = None) -> str:
     if output_dir is None:
         output_dir = tempfile.gettempdir()
 
+    ydl_opts = {
+        'format': 'bestaudio/best',
+        'extractaudio': True,  # Download only audio
+        'audioformat': 'mp3',  # Convert to mp3
+        'outtmpl': os.path.join(output_dir, '%(title)s.%(ext)s'),  # Output filename
+        'noplaylist': True,  # Only download single video, not playlist
+    }
+
     try:
-        yt = YouTube(url)  # Create a YouTube object
-        audio_stream = yt.streams.filter(only_audio=True).first()  # Get the first audio stream
-        audio_file = audio_stream.download(output_path=output_dir, filename=f"{yt.title}.mp3")  # Download audio
+        with youtube_dl.YoutubeDL(ydl_opts) as ydl:
+            info_dict = ydl.extract_info(url, download=True)  # Download audio
+            audio_file = os.path.join(output_dir, f"{info_dict['title']}.mp3")  # Construct the file path
 
         print(f"Successfully downloaded: {audio_file}")
         return audio_file
     except Exception as e:
         raise Exception(f"Error downloading YouTube audio: {str(e)}")
 
-
 def run_asr(audio_file, youtube_url):
     temp_file = None
     try: