So I just tried to restrict the API key with the IP option and enabled it and added my IP address as:
107.154.147.253
But then when I go to my video page, it's now telling me:
Sorry, there was a YouTube API error: The calling IP address 50.116.78.101 does not match the IP restrictions configured on the API key. Please use the API Console to update your key restrictions.
So who/what/where is this "Calling IP" coming from that it would have a much different IP than my website domain?