This is an older man with Parkinson’s disease. Note the low frequency tremor that dissipates with action, as well as the festinating gait (slow to start), and masked facies.
Festinating Gait
https://physicaldiagnosispdx.com/wp-content/uploads/Gait_1.mp4
Pill-Rolling Tremor and Masked Facies
https://physicaldiagnosispdx.com/wp-content/uploads/Tremor_masked_facies.mp4
Clip 2