ytma! automatically converts YouTube(TM), Vimeo, Vine, Soundcloud, WebM, and MP4 links into real embedded videos.
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It used to be a part of the YT API to set the player, but it's no longer working. I'll remove it in the next release.
TypeError: window.yt.player.getPlayerByElement is not a function
I get this error sometimes with embedded videos, not sure if this is normal or not so I have to ask.
I'm on FF 59 tested with Tampermonkey, I'm pretty sure this is caused be the script on my end because even when only this script enabled, the problem appears everytime.
Example site: https://www.orlygift.com/giveaway