What is the peculiar pattern in 1.00 1.25 1.33 1.60 1.67 1.77 1.85 2.21 2.35 2.39?

Answer 1

They look a lot like film frame ratios, ie how much the width is times the height, for films (and TVs).

The ones I have in my DVD/Video collection are:

1.33 (Full screen 4:3)- old TV programs and films trimmed for old TV full screen

1.56 (14:9) - eg Tilly Trotter

1.66 - eg The Railway Children

1.67 - eg The Wild Geese

1.75 - eg The Jungle Book

1.77 - eg The Sting

1.78 (Wide screen 16:9) - eg Monsters University

1.85 - eg Despicable Me

2.20 - eg The Sound of Music

2.25 - eg Project A

2.28 - eg The Last Emperor

2.30 - eg Titanic

2.35 - eg The Mummy

2.39 - eg Ratatouille

2.40 - eg Harry Potter and the Order of the Phoenix

2.50 - eg Troy

2.55 - eg The Bridge on the River Kwai

2.70 - eg Ben-Hur

A lot of films are at 1.85 and 2.35