XThreads Youtube Video Gallery Stopped Working

[RateU]

Well, TBH, I don't know whether MyBB changed it or not. I don't have 1.8.9/10. If you want to use the default MyBB embed code, post a YouTube video in your general/test forum. Look at the source page and find the embed code. Copy the code, and replace the video ID with {$GLOBALS['threadfields']['ytvgalid']}.

EDIT: Or you can use this embed code:
https://developers.google.com/youtube/player_parameters
http://www.w3schools.com/html/html_youtube.asp