You can see side to side movement of the blade in the video so I agree it is most likely bearing related. Replace all of them while you are doing the repair because one going out could have caused a lot of stress on the other two and might cause problems later if they are not replaced. Having to break it down again just wastes actual shop time you could be using to build projects.
Your BRAIN Is The Most Important Power Tool In Your Shop. Turn It On Before You Turn On Any Other Power Tool.
A Disability Is Only A Disability If You Let It Be One