Update app.py

app.py

@@ -314,7 +314,6 @@ import random
 from datetime import datetime
 import json
 import requests
-from fake_useragent import UserAgent
 import http.cookiejar as cookielib
 
 # Set page config
@@ -329,6 +328,15 @@ class Config:
     MAX_RETRIES = 5
     RETRY_DELAYS = [3, 5, 10, 15, 30]  # Progressive delays in seconds
     
+    # 미리 정의된 User-Agent 목록
+    USER_AGENTS = [
+        'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36',
+        'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.2.1 Safari/605.1.15',
+        'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:122.0) Gecko/20100101 Firefox/122.0',
+        'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36',
+        'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Edge/120.0.0.0 Safari/537.36'
+    ]
+    
     HEADERS_POOL = [
         {
             'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
@@ -356,9 +364,8 @@ class SessionManager:
     
     @staticmethod
     def get_random_headers():
-        ua = UserAgent()
         headers = random.choice(Config.HEADERS_POOL).copy()
-        headers['User-Agent'] = ua.random
+        headers['User-Agent'] = random.choice(Config.USER_AGENTS)
         return headers
     
     @staticmethod
@@ -384,7 +391,6 @@ def get_download_options(session_headers=None):
         'retries': Config.MAX_RETRIES,
         'file_access_retries': 3,
         'fragment_retries': 3,
-        'retry_sleep_functions': {'http': lambda n: random.uniform(1, 5) * n},
         'skip_unavailable_fragments': True,
         'abort_on_unavailable_fragment': False,
     }
@@ -416,14 +422,6 @@ def download_with_retry(url, progress_callback):
             
             ydl_opts['progress_hooks'] = [progress_hook]
             
-            # Pre-check video availability
-            with yt_dlp.YoutubeDL({'quiet': True}) as ydl:
-                try:
-                    ydl.extract_info(url, download=False)
-                except Exception as e:
-                    if "This video is not available" in str(e):
-                        return None, "Video is not available. It might be private or deleted."
-            
             # Actual download
             with yt_dlp.YoutubeDL(ydl_opts) as ydl:
                 info = ydl.extract_info(url, download=True)