Update app.py

app.py

@@ -33,62 +33,52 @@ import yt_dlp
 import time
 import random
 
-def download_video(url):
+def download_video(url, cookies_file=None):
     """
-    Downloads a video from a URL using yt-dlp while emulating human behavior.
-    
-    Args:
-        url (str): The URL of the video to download.
-
-    Returns:
-        str: The path to the downloaded file, or None if an error occurred.
+    Downloads a video from YouTube with bot evasion techniques
     """
     print("Simulating human-like download...")
 
-    # Introduce a randomized delay to mimic human behavior
-    delay = random.uniform(2, 5)  # Random delay between 2 to 5 seconds
-    print(f"Waiting for {delay:.2f} seconds before starting the download...")
+    # Randomized human-like delay
+    delay = random.uniform(1, 4)
+    print(f"Artificial delay: {delay:.2f}s")
     time.sleep(delay)
 
-    try:
-        ydl_opts = {
-            'format': 'bestvideo[ext=mp4]+bestaudio[ext=m4a]/best[ext=mp4]/best',
-            'merge_output_format': 'mp4',  # Ensure final output is mp4
-            'outtmpl': '%(title)s.%(ext)s',  # Use title for filename
-            'noprogress': True,  # Remove progress bar output
-            'quiet': False,  # Show logs
-            'nocheckcertificate': True,  # Bypass SSL verification issues
-            'sleep_interval': random.uniform(1, 3),  # Random sleep between requests
-
-            # **Emulating a real browser**
-            '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',
-            'headers': {
-                'Accept-Language': 'en-US,en;q=0.9',
-                'Accept-Encoding': 'gzip, deflate, br',
-                'Referer': 'https://www.youtube.com/',
-                'Connection': 'keep-alive'
-            },
-
-            # **Using browser cookies for authentication**
-            'cookies-from-browser': 'chrome',  # Change to 'firefox' if needed
-        }
+    ydl_opts = {
+        'format': 'bestvideo[ext=mp4]+bestaudio[ext=m4a]/best[ext=mp4]/best',
+        'outtmpl': '%(title)s.%(ext)s',
+        'noprogress': True,
+        'quiet': False,
+        
+        # Modern browser headers
+        'user_agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36',
+        'headers': {
+            'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
+            'Accept-Language': 'en-US,en;q=0.5',
+            'Sec-Fetch-Mode': 'navigate',
+        },
+
+        # Cookie authentication
+        'cookiefile': cookies_file.name if cookies_file else None,
+        
+        # Advanced bot evasion
+        'throttledratelimit': random.randint(500, 1000),
+        'retries': 3,
+        'fragment_retries': 5,
+        'skip_download': False,
+    }
 
+    try:
         with yt_dlp.YoutubeDL(ydl_opts) as ydl:
-            info_dict = ydl.extract_info(url, download=True)
-            filename = ydl.prepare_filename(info_dict)  # Get the actual filename
-            print("Downloaded:", filename)
+            info = ydl.extract_info(url, download=True)
+            filename = ydl.prepare_filename(info)
             return filename
-    except yt_dlp.utils.DownloadError as e:
-        print(f"Download error: {e}")
     except Exception as e:
-        print(f"Unexpected error: {e}")
+        print(f"Error: {str(e)}")
+        raise gr.Error(f"Download failed: {str(e)}")
 
-    return None
-
-# Example usage
 url = "https://www.youtube.com/watch?v=uLVRZE8OAI4"
-download_video(url)
-
+download_video(url)