If your intent to fly was recreational, and not to "share" then that's fine. But if your intent is to post it to YT, then it is 107. It is clear and unambiguous in the FAA rules. Simply the intent to put it online, whether to gain popularity, provide images that no one else has been able to get, or anything else is 107.
Part 107 is the FAA rules for drones, there are "recreational exceptions" to needing part 107, but they are very narrow.
All it takes is 1 Karen out there to be pissed that you flew nearby on a beach, and you may have the FAA calling.
The FAA has proposed to fine a drone pilot for $182,000. The story has been going around the internet recently. The Federal Aviation Administration (FAA) was gracious enough to allow me to obtain a copy of the proposed penalty letter which went much more into detail as to the alleged violations...
jrupprechtlaw.com
This guy was just uploading to YT as well... (No idea if it was monetized, but the FAA never seems to mention that as an issue). Now, he was also not flying safe or responsibly, and ignored a few warning letters, but this guy was just like the OP, uploading to YT without a 107. He got complaints because of safety, but 26 violations were because he didn't have his 107.