Update app.py

app.py

@@ -320,7 +320,7 @@ COOKIES_FILE = 'youtube.com_cookies.txt'
 has_cookies = os.path.exists(COOKIES_FILE)
 
 if has_cookies:
-    st.success("✅ Cookie file detected - Enhanced download capabilities enabled")
+    st.success("✅ Cookie file detected")
 else:
     st.warning("⚠️ No cookie file found - Some videos might be restricted")
 
@@ -332,7 +332,7 @@ def download_video(url):
         ydl_opts = {
             'format': 'bestvideo+bestaudio/best',
             'outtmpl': str(output_dir / '%(title)s.%(ext)s'),
-            'merge_output_format': 'mp4',
+            'merge_output_format': 'webm',
             'quiet': True,
             'no_warnings': True,
             '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',