Well, it seems minor but I've never cut up a coil pack to see how they're built.
I have had issues similar to what is in your video from just a hairline crack in the plastic stem of a spark plug boot, toward the top no less... So I wouldn't dismiss it as a possibility. I wasn't affected to the same degree but keep in mind that if it's the coil pack then there are two cylinders firing erratically, not just one.
__________________
If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum.
If you're so inclined I'm always more than happy to accept tips via PayPal. 
Tip Jar ---> 
|