У вашего броузера проблема в совместимости с HTML5
To celebrate the 5000th subscriber, I decided to make a video after a really long time of inactivity!
Sorry for the delay but I have been really busy in the past few months.
Paper tipe: Tant paper
Paper size: 11.25cm x 7.5cm (proportion 3x2)
How to make the starting rectangle:
_fold in half a 15 cm square sheet of paper
_cut along the fold
_fold in half the rectangle and than in half again, dividing in 4 equal parts the longest edge
_cut a third of the rectangle obtaining a 3x2 rectangle with 11.25cm x 7.5cm dimensions