From a6bcaf71fc94b2f301d4253ecea87ea2ff76fedb Mon Sep 17 00:00:00 2001
From: pukkandan <pukkandan.ytdlp@gmail.com>
Date: Sun, 31 Jul 2022 03:19:50 +0530
Subject: [PATCH] [outtmpl] Treat empty values as None in filenames

Workaround for #4485
---
 yt_dlp/YoutubeDL.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/yt_dlp/YoutubeDL.py b/yt_dlp/YoutubeDL.py
index e9a51cba4..ce8ac2e89 100644
--- a/yt_dlp/YoutubeDL.py
+++ b/yt_dlp/YoutubeDL.py
@@ -1162,6 +1162,9 @@ class YoutubeDL:
             if mdict['strf_format']:
                 value = strftime_or_none(value, mdict['strf_format'].replace('\\,', ','))
 
+            # XXX: Workaround for https://github.com/yt-dlp/yt-dlp/issues/4485
+            if sanitize and value == '':
+                value = None
             return value
 
         na = self.params.get('outtmpl_na_placeholder', 'NA')