Motion video of Double Stroke Roll
Channel: Alexander Refsum Jensenius
Date: 2021-01-28

A motion video of "Vic Firth Rudiment Lessons: Double Stroke Roll"
https://www.youtube.com/watch?v=-o5cmboS7BE&list=PLCD9F49C1322405E7&index=4



See this blog post for an explanation of what you see: 
https://www.arj.no/2021/01/28/drum-roll/

The video is made by subtracting subsequent frames from the video using the motion() function of the Musical Gestures Toolbox for Python: 
https://github.com/fourMs/MGT-python