You can use the embed action for this:

{{embed url="https://www.youtube.com/embed/dROLGWhCcWY" width="560" height="315"}}

<#<iframe width="560" height="315" src="https://www.youtube-nocookie.com/embed/dROLGWhCcWY" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>#>

<#<iframe width="560" height="315" src="https://www.youtube-nocookie.com/embed/dROLGWhCcWY" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>#>

Ensure you allowed the formatter to process Inline HTML and the CSP (Content Security Policy) to load from the media source.

1. enable Inline HTML support
   1. for a page (page properties > extended) as Admin or
   2. for everyone (secondary config ['allow_rawhtml'])
2. If CSP is enabled, what is recommended, you must set the CSP directives in your csp_custom.conf:

   1. Content-Security-Policy:
      	default-src 'self';
      	script-src 'self' 'unsafe-inline';
      	style-src 'self' 'unsafe-inline';
      	img-src * data:;
      	media-src 'self' archive.org *.youtube.com *.youtube-nocookie.com dailymotion.com;
      	object-src 'self' archive.org *.googlevideo.com *.ytimg.com *.youtube.com *.youtube-nocookie.com dailymotion.com;
      	frame-src 'self' archive.org *.youtube.com *.youtube-nocookie.com *.dailymotion.com;		

   2. set your Content-Security-Policy (CSP) in your secondary config config['csp'] to 2 (custom)

How to embed links such as
https://www.youtube.com/watch?v=sgjIQWP_8nE
https://www.youtube.com/shorts/ZB1d_3xJboY
on https://wackowiki.org/doc/Sandbox they are not playing

Use the two options as explained above, for instance the embed action example.
Just use it and replace the URL with yours.
For more details please read the embed section under Actions.

Replace the URL not works. I did it in Sandbox, those two links you deleted.
Links are different - the working example has youtube-nocookie.com/embed
In my non-working -
youtube.com/watch?v=
youtube.com/shorts/
I suspect youtu.be/ won't work either
Any idea for make Copy-Paste links works?

You must use the embed link of YouTube. There is a Share link / icon on each Youtube video showing you the embed options. Its an API issue of YouTube.

Or simply use
https://www.youtube.com/embed/HASH
https://www.youtube-nocookie.com/embed/HASH

Otherwise YouTube wont service your request.

It is possible to write an action that parses all these link combinations, takes the hash and uses finally the embed/ link. I'm not aware of a PHP libary that will do this for a large variety of streaming providers.

Using embed/HASH is more complicated than Copy-Paste and therefore a bit stressful. If there is no choice ...
Thank you.

I found out there is a oEmbed API for that.

• https://oembed.com

So it is possible to implement that, add a oEmbed library and action similar to the feed action.

• https://github.com/mpratt/Embera
• https://github.com/php-embed/Embed

Another option is to match all external links against the oEmbed library API in the link() function.
Conceivable as an available extension, but would not add it to the core.