From e3c7d49571b39e5886ff5371a0dd99dca0709191 Mon Sep 17 00:00:00 2001
From: pukkandan <pukkandan.ytdlp@gmail.com>
Date: Wed, 8 Dec 2021 19:41:54 +0530
Subject: [PATCH] [compat] Suppress errors in enabling VT mode Closes #1932

---
 yt_dlp/YoutubeDL.py |  3 ++-
 yt_dlp/compat.py    | 11 ++++++++++-
 yt_dlp/utils.py     |  3 ++-
 3 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/yt_dlp/YoutubeDL.py b/yt_dlp/YoutubeDL.py
index 7406f4c5e..6064c4c95 100644
--- a/yt_dlp/YoutubeDL.py
+++ b/yt_dlp/YoutubeDL.py
@@ -3394,7 +3394,8 @@ def print_debug_header(self):
         def get_encoding(stream):
             ret = getattr(stream, 'encoding', 'missing (%s)' % type(stream).__name__)
             if not supports_terminal_sequences(stream):
-                ret += ' (No ANSI)'
+                from .compat import WINDOWS_VT_MODE
+                ret += ' (No VT)' if WINDOWS_VT_MODE is False else ' (No ANSI)'
             return ret
 
         encoding_str = 'Encodings: locale %s, fs %s, out %s, err %s, pref %s' % (
diff --git a/yt_dlp/compat.py b/yt_dlp/compat.py
index 8508f1465..79c8e3494 100644
--- a/yt_dlp/compat.py
+++ b/yt_dlp/compat.py
@@ -160,12 +160,20 @@ def compat_expanduser(path):
         compat_pycrypto_AES = None
 
 
+WINDOWS_VT_MODE = False if compat_os_name == 'nt' else None
+
+
 def windows_enable_vt_mode():  # TODO: Do this the proper way https://bugs.python.org/issue30075
     if compat_os_name != 'nt':
         return
+    global WINDOWS_VT_MODE
     startupinfo = subprocess.STARTUPINFO()
     startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
-    subprocess.Popen('', shell=True, startupinfo=startupinfo)
+    try:
+        subprocess.Popen('', shell=True, startupinfo=startupinfo)
+        WINDOWS_VT_MODE = True
+    except Exception:
+        pass
 
 
 #  Deprecated
@@ -226,6 +234,7 @@ def windows_enable_vt_mode():  # TODO: Do this the proper way https://bugs.pytho
 # Set public objects
 
 __all__ = [
+    'WINDOWS_VT_MODE',
     'compat_HTMLParseError',
     'compat_HTMLParser',
     'compat_HTTPError',
diff --git a/yt_dlp/utils.py b/yt_dlp/utils.py
index 6831f0773..15cc4d3b2 100644
--- a/yt_dlp/utils.py
+++ b/yt_dlp/utils.py
@@ -6592,7 +6592,8 @@ def jwt_decode_hs256(jwt):
 
 def supports_terminal_sequences(stream):
     if compat_os_name == 'nt':
-        if get_windows_version() < (10, 0, 10586):
+        from .compat import WINDOWS_VT_MODE  # Must be imported locally
+        if not WINDOWS_VT_MODE or get_windows_version() < (10, 0, 10586):
             return False
     elif not os.getenv('TERM'):
         return False