A little tip, if you get youtube "video unavailable" error for some of youtube embedded videos.
Check your /.htaccess file for these lines and remove or comment if any:
For example, I had error for this video, while others used to work fine,
but after removing "same-origin" line from .htaccess file, it started to work OK.
Check your /.htaccess file for these lines and remove or comment if any:
#Header set X-Frame-Options "SAMEORIGIN"
#Header set Referrer-Policy "same-origin"
For example, I had error for this video, while others used to work fine,
but after removing "same-origin" line from .htaccess file, it started to work OK.