The scales names are in the captions beneath the movies.
C Major/Right Hand
C Major/Left Hand
C Major/Both Hands, One Octave
C Major/Both Hands, Two Octaves
G Major/Right Hand, Two Octaves
G Major/Left Hand, Two Octaves
G Major/Both Hands, Two Octaves
D Major/Left Hand, Two Octaves
D Major/Right Hand, two octaves
D Major/Two Hands, two octaves