Thanks for the input and welcome to the Forum
The hum won't be gotten rid of - it is due to a refrigerator (over my right shoulder) that I call the singing fridge - off-balance, won't get fixed any time soon - too much mess in the garage
Other videos I have made since I make in the 15 minutes or so when it is silent.
Just turn down the volume and see if you can follow.
No harm, no foul, MMexcuse me for haven been curt or terse or one of those other words from the same family . .. didn't mean to come across as rude.