From bdeb3eb3f29eebbe8237fbc5186e51e7293eea4a Mon Sep 17 00:00:00 2001
From: bashonly <88596187+bashonly@users.noreply.github.com>
Date: Tue, 12 Aug 2025 02:58:22 -0500
Subject: [PATCH] [pp/XAttrMetadata] Only set "Where From" attribute on macOS
 (#13999)

Fix 3e918d825d7ff367812658957b281b8cda8f9ebb

Closes #14004
Authored by: bashonly
---
 yt_dlp/postprocessor/xattrpp.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/yt_dlp/postprocessor/xattrpp.py b/yt_dlp/postprocessor/xattrpp.py
index f87998976..52404b7d7 100644
--- a/yt_dlp/postprocessor/xattrpp.py
+++ b/yt_dlp/postprocessor/xattrpp.py
@@ -1,4 +1,5 @@
 import os
+import sys
 
 from .common import PostProcessor
 from ..utils import (
@@ -54,8 +55,8 @@ def run(self, info):
                     if infoname == 'upload_date':
                         value = hyphenate_date(value)
                     elif xattrname == 'com.apple.metadata:kMDItemWhereFroms':
-                        # NTFS ADS doesn't support colons in names
-                        if os.name == 'nt':
+                        # Colon in xattr name throws errors on Windows/NTFS and Linux
+                        if sys.platform != 'darwin':
                             continue
                         value = self.APPLE_PLIST_TEMPLATE % value
                     write_xattr(info['filepath'], xattrname, value.encode())