Hi to anyone this could help.

How block a domain from embeding video in wordpress.

This my own hack ,– it works good

if domain is a native WP embed change the format string
setting to false. If the domain to be blocked is not in the
list of WP native embeds but its working and causing
problems, pick a domain in the code list you don’t care about.
Replace that domain with the one you want to block in that
code string This will break it because it will be the wrong
format. it will no longer embed- but activity plus using the
link option will post the video as a link with an image
and text.

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Source file

yourdomain.com\wp-includes\class-oembed.php
———- class-oembed.php
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Example
( Original )

‘#https?://(www\.)?soundcloud\.com/.*#i’ => array( ‘https://soundcloud.com/oembed’, true

),
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( Hack )

‘#https?://(www\.)?domain\.com/.*#i’ => array( ‘https://domain.com/oembed’, true ),

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