Looking for help

So say you have a YouTube video url

There are sites that allow you to submit the url or video ID and it embeds it on there site.  

1.  How can I search for these types of sites.   I have a list of them now straight to videos that’s been listed.  

But most of all.
2.  Does gsa offer this sort of submission types for embed like this on sites that offer it

If not what software recommendation does 

Thank you in advance