>In the last couple of months I saw a couple visualizations

Author is probably referring to this: http://moviebarcode.tumblr.com/ or similar

Examples:

2001: A SPACE ODYSSEY (1968) http://moviebarcode.tumblr.com/post/3432026155/2001-a-space-...

BLADE RUNNER (1982) http://moviebarcode.tumblr.com/post/4438993828/blade-runner-...

STAR WARS: COMPLETE SAGA (1977-2005) http://moviebarcode.tumblr.com/post/13347201975/star-wars-co...

THE WIZARD OF OZ (1939) http://moviebarcode.tumblr.com/post/3512965847/the-wizard-of...

HARRY POTTER: COMPLETE SERIES (2001-2011) http://moviebarcode.tumblr.com/post/12390371286/harry-potter...