From 38d79fd16c741ae9e460bc5adbbdb9972347b6be Mon Sep 17 00:00:00 2001
From: pukkandan <pukkandan.ytdlp@gmail.com>
Date: Mon, 6 Dec 2021 23:30:33 +0530
Subject: Use `parse_duration` for `--wait-for-video` and some minor fix

---
 yt_dlp/utils.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'yt_dlp/utils.py')

diff --git a/yt_dlp/utils.py b/yt_dlp/utils.py
index 7ac7a106b..6831f0773 100644
--- a/yt_dlp/utils.py
+++ b/yt_dlp/utils.py
@@ -3972,8 +3972,9 @@ def strftime_or_none(timestamp, date_format, default=None):
 def parse_duration(s):
     if not isinstance(s, compat_basestring):
         return None
-
     s = s.strip()
+    if not s:
+        return None
 
     days, hours, mins, secs, ms = [None] * 5
     m = re.match(r'(?:(?:(?:(?P<days>[0-9]+):)?(?P<hours>[0-9]+):)?(?P<mins>[0-9]+):)?(?P<secs>[0-9]+)(?P<ms>\.[0-9]+)?Z?$', s)
-- 
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