Update app.py

app.py

@@ -127,13 +127,19 @@ def download_youtube_video(url):
         with tempfile.TemporaryDirectory() as temp_dir:
             output_template = os.path.join(temp_dir, '%(title)s.%(ext)s')
             
-            # Using yt-dlp instead of youtube-dl
+            # Enhanced configuration for yt-dlp
             command = [
-                'yt-dlp',  # Changed from youtube-dl to yt-dlp
+                'yt-dlp',
                 '--format', 'best[filesize<50M]',
                 '--quiet',
                 '--no-warnings',
                 '--output', output_template,
+                '--cookies-from-browser', 'chrome',  # Use Chrome cookies to appear as logged-in user
+                '--user-agent', 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36',  # Modern user agent
+                '--sleep-interval', '2',  # Add small delay between requests
+                '--max-sleep-interval', '5',
+                '--socket-timeout', '10',
+                '--retries', '3',
                 url
             ]
             
@@ -156,8 +162,37 @@ def download_youtube_video(url):
             stdout, stderr = process.communicate()
             
             if process.returncode != 0:
-                logger.error(f"Erreur yt-dlp: {stderr}")
-                raise Exception(f"Erreur yt-dlp: {stderr}")
+                if "Sign in to confirm you're not a bot" in stderr:
+                    logger.error("Détection anti-bot YouTube - tentative avec configuration alternative")
+                    # Fallback approach with different configuration
+                    command = [
+                        'yt-dlp',
+                        '--format', 'best[filesize<50M]',
+                        '--quiet',
+                        '--no-warnings',
+                        '--output', output_template,
+                        '--cookies', 'youtube.com_cookies.txt',  # Use cookies file if available
+                        '--user-agent', 'Mozilla/5.0 (X11; Linux x86_64; rv:120.0) Gecko/20100101 Firefox/120.0',  # Alternative user agent
+                        '--sleep-interval', '3',
+                        '--max-sleep-interval', '6',
+                        '--socket-timeout', '15',
+                        '--retries', '5',
+                        '--no-check-certificates',  # Skip HTTPS certificate validation
+                        url
+                    ]
+                    process = subprocess.Popen(
+                        command,
+                        stdout=subprocess.PIPE,
+                        stderr=subprocess.PIPE,
+                        universal_newlines=True
+                    )
+                    stdout, stderr = process.communicate()
+                    if process.returncode != 0:
+                        logger.error(f"Erreur yt-dlp: {stderr}")
+                        raise Exception(f"Erreur yt-dlp: {stderr}")
+                else:
+                    logger.error(f"Erreur yt-dlp: {stderr}")
+                    raise Exception(f"Erreur yt-dlp: {stderr}")
             
             downloaded_files = os.listdir(temp_dir)
             if not downloaded_files:
@@ -177,7 +212,6 @@ def download_youtube_video(url):
         logger.error(f"Erreur lors du téléchargement de la vidéo: {e}")
         return None
 
-
 def telecharger_pdf(url):
     """Télécharge un PDF et retourne le chemin du fichier"""
     try: