Update app.py

app.py

@@ -336,8 +336,13 @@ def download_audio(url, cookie_file=None):
     cookie_path = None
     if cookie_file:
         if not hasattr(cookie_file, 'name') or not os.path.exists(cookie_file.name):
-            return None, "Invalid or missing cookie file", None
+            return None, "Invalid or missing cookie file. Ensure it's a valid Netscape format .txt file.", None
         cookie_path = cookie_file.name
+        # Check if cookie file is in Netscape format
+        with open(cookie_path, 'r') as f:
+            content = f.read()
+            if not content.startswith('# Netscape HTTP Cookie File'):
+                return None, "Cookie file is not in Netscape format. See https://github.com/yt-dlp/yt-dlp/wiki/Extractors#exporting-youtube-cookies", None
         logger.info(f"Using cookie file: {cookie_path}")
     
     if 'drive.google.com' in url:
@@ -346,36 +351,15 @@ def download_audio(url, cookie_file=None):
         return download_from_youtube(url, cookie_path)
 
 def download_from_youtube(url, cookie_path):
-    # First attempt: Try downloading bestaudio directly
-    ydl_opts_audio = {
-        'format': 'bestaudio/best',
-        'postprocessors': [{
-            'key': 'FFmpegExtractAudio',
-            'preferredcodec': 'wav',
-            'preferredquality': '192',
-        }],
-        'outtmpl': 'ytdl/%(title)s_audio.%(ext)s',
-        'user_agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.54 Safari/537.36',
-        'geo_bypass': True,
-        'force_ipv4': True,
-        'referer': 'https://www.youtube.com/',
-        'noplaylist': True,
-        'cookiefile': cookie_path,
-        'extractor_retries': 5,
-        'ignoreerrors': False,
-        'no_check_certificate': True,
-        'verbose': True,
-    }
-    
-    # Second attempt: Download best video+audio and extract audio
-    ydl_opts_video = {
+    # Configuration for video+audio download (default, as audio-only often fails for Shorts)
+    ydl_opts = {
         'format': 'bestvideo+bestaudio/best',
         'postprocessors': [{
             'key': 'FFmpegExtractAudio',
             'preferredcodec': 'wav',
             'preferredquality': '192',
         }],
-        'outtmpl': 'ytdl/%(title)s_video.%(ext)s',
+        'outtmpl': 'ytdl/%(title)s.%(ext)s',
         'user_agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.54 Safari/537.36',
         'geo_bypass': True,
         'force_ipv4': True,
@@ -390,19 +374,8 @@ def download_from_youtube(url, cookie_path):
     }
     
     try:
-        # First try: Direct audio download
-        logger.info("Attempting direct audio download")
-        with yt_dlp.YoutubeDL(ydl_opts_audio) as ydl:
-            info_dict = ydl.extract_info(url, download=True)
-            file_path = ydl.prepare_filename(info_dict).rsplit('.', 1)[0] + '.wav'
-            
-            if os.path.exists(file_path):
-                sample_rate, data = scipy.io.wavfile.read(file_path)
-                return file_path, "YouTube audio download successful", (sample_rate, data)
-        
-        # If direct audio fails, try video+audio
-        logger.info("Direct audio failed, attempting video+audio download")
-        with yt_dlp.YoutubeDL(ydl_opts_video) as ydl:
+        logger.info("Attempting video+audio download to extract audio")
+        with yt_dlp.YoutubeDL(ydl_opts) as ydl:
             info_dict = ydl.extract_info(url, download=True)
             file_path = ydl.prepare_filename(info_dict).rsplit('.', 1)[0] + '.wav'
             
@@ -410,13 +383,13 @@ def download_from_youtube(url, cookie_path):
                 return None, "Downloaded audio file not found after video processing", None
             
             sample_rate, data = scipy.io.wavfile.read(file_path)
-            return file_path, "YouTube video+audio download and conversion successful", (sample_rate, data)
+            return file_path, "YouTube video+audio download and audio extraction successful", (sample_rate, data)
     
     except yt_dlp.utils.DownloadError as e:
         if "Sign in to confirm you’re not a bot" in str(e):
             return None, "Authentication error. Please upload valid YouTube cookies: https://github.com/yt-dlp/yt-dlp/wiki/Extractors#exporting-youtube-cookies", None
         if "Requested format is not available" in str(e):
-            return None, "Requested audio format not available. Try checking available formats with --list-formats", None
+            return None, "Requested format not available. Try checking available formats with yt-dlp --list-formats", None
         return None, f"YouTube download error: {str(e)}", None
     except yt_dlp.utils.GeoRestrictedError:
         return None, "Video is geo-restricted in your region", None