[core] Only ensure playlist thumbnail dir if writing thumbs (#8373)

Bugfix for 2acd1d555ef89851c73773776715d3de9a0e30b9

Closes #8372
Authored by: bashonly

diff --git a/yt_dlp/YoutubeDL.py b/yt_dlp/YoutubeDL.py
index 8e11646d3b233cdb1f1ccdb5e4765cfc03b7772c..d066efdc7cc1fc71527454fd6eac02e6de9bfbeb 100644 (file)
--- a/yt_dlp/YoutubeDL.py
+++ b/yt_dlp/YoutubeDL.py
@@ -4242,7 +4242,7 @@ def _write_thumbnails(self, label, info_dict, filename, thumb_filename_base=None
             self.write_debug(f'Skipping writing {label} thumbnail')
             return ret
 
-        if not self._ensure_dir_exists(filename):
+        if thumbnails and not self._ensure_dir_exists(filename):
             return None
 
         for idx, t in list(enumerate(thumbnails))[::-1]: