diff --git a/universal.py b/universal.py
index 91f5d7f..b0d8454 100644
--- a/universal.py
+++ b/universal.py
@@ -113,9 +113,9 @@ class SocialDownloaderMod(loader.Module):
                 ]
                 
                 if source.lower() == 'tiktok':
-                    cmd.extend(['--cookies', 'tiktok_cookies.txt', '--impersonate', 'Chrome'])
+                    cmd.extend(['--cookies', 'tiktok_cookies.txt'])
                 elif source.lower() == 'instagram':
-                    cmd.extend(['--cookies', 'instagram_cookies.txt', '--impersonate', 'Chrome'])
+                    cmd.extend(['--cookies', 'instagram_cookies.txt'])
                 
                 process = await asyncio.create_subprocess_exec(
                     *cmd, stdout=asyncio.subprocess.PIPE, stderr=asyncio.subprocess.PIPE
@@ -142,7 +142,7 @@ class SocialDownloaderMod(loader.Module):
     
     async def get_video_info(self, url):
         try:
-            cmd = [sys.executable, '-m', 'yt_dlp', '--dump-json', '--no-playlist', '--impersonate', 'Chrome', url]
+            cmd = [sys.executable, '-m', 'yt_dlp', '--dump-json', '--no-playlist', url]
             process = await asyncio.create_subprocess_exec(
                 *cmd, stdout=asyncio.subprocess.PIPE, stderr=asyncio.subprocess.PIPE
             )
@@ -197,9 +197,11 @@ class SocialDownloaderMod(loader.Module):
             with tempfile.TemporaryDirectory() as temp_dir:
                 output_template = os.path.join(temp_dir, '%(title)s.%(ext)s')
                 
+                format_str = f'bestvideo[height<={quality}]+bestaudio/best[height<={quality}]/best' if quality != 'best' else 'bestvideo+bestaudio/best'
+                
                 cmd = [
                     sys.executable, '-m', 'yt_dlp',
-                    '-f', f'best[height<={quality}]' if quality != 'best' else 'best',
+                    '-f', format_str,
                     '--max-filesize', f"{self.config['max_size']}M",
                     '-o', output_template,
                     url