This is a basic puppetry exercise involving two puppeteers. The one on the right belongs to an experienced puppeteer with a few years of practice, the other to someone relatively new to puppetry. Neither performance is perfect and you could pick apart this video on a variety of technical aspects - lip sync, eye focus, etc. - but the real difference - the only one that really matters - is that one has better physical control over their hand than the other.
For more on this concept see http://puppetvision.info/2010/01/control-you-must-learn-control.html
I've been following the work on "Puppetry Input Animation" in blender closely, I'm glad to see the principles being shown here.
Chucker84 2 years ago