Finding Open Graph Tags On Youtube

I'm working on a Tampermonkey script to hide related videos on youtube if the og:video:tag contains 'League of Legends'. When I use the Open Graph Debugger (link) it find many tags

Solution 1:

YouTube video source contains those tags only if the userAgent is

facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)

or (I used this in my test)

facebookexternalhit/1.1

You can test these by adding a new device to DevTools with those user agents. I am not sure you want to use these tags, but you have two options:

• If there is backend processer for finding these tags, you can switch the user agent to appropriate one there.
• If you're working on a browser extension, you should set up a proxy that does the above for you. Send the video permalink and return an object of tags.