@ -922,7 +922,7 @@ def unified_strdate(date_str, day_first=True):
def determine_ext(url, default_ext='unknown_video'):
if url is None:
return default_ext
guess = url.partition('?')[0].rpartition('.')[2]
guess = url.partition('?')[0].rpartition('.')[2].rstrip('/')
if re.match(r'^[A-Za-z0-9]+$', guess):
return guess
else: