It’s actually tough to tell if the entire platter is actually fluctuating or if it’s just the machining is off giving the illusion it’s the entire platter. I would pull your mat, it looks to be a big contributor in this. Otherwise, what everyone else said is correct. Records are rarely dead flat.
Is this amount of record/tonearm bobbing "normal"
Most records sound fine, but a few of them (shoegaze, Interpol) with extended chords sound bad, uneven.
This could all be in my head. I'm new to this.
Kindly take a look at a brief video and tell me whether my platter is warped?