[KVS (XML) Feed parser type]

Okay i have this xml

<?xml version="1.0" encoding="UTF-8"?>
<videos>
<video>
<id>1</id>
<title>titile</title>
<dir>directory</dir>
<rating>0</rating>
<votes>0</votes>
<popularity>0</popularity>
<post_date>2021-01-15 19:19:00</post_date>
<content_source>content source</content_source>
<content_source_url>http://content.source.url/</content_source_url>
<user>Admin</user>
<link>http://link</link>
<models>models</models>
<embed><iframe=""></iframe></embed>
<formats>
<format>
<postfix>.mp4</postfix>
<duration>1807</duration>
<width>852</width>
<height>480</height>
<filesize>180579580</filesize>
</format>
</formats>

I select Video adding mode as "Download video". Which of these fields can I set the source video URL?

[KVS (XML) Feed parser type]

Hello.

Where can i get the specification of the "KVS (XML) Feed parser type" file format?