Variable Aspect Ratios

https://en.wikipedia.org/wiki/Aspect_ratio_(image) https://en.wikipedia.org/wiki/File:Filmaspectratios.svg https://en.wikipedia.org/wiki/List_of_motion_picture_film_formats https://en.wikipedia.org/wiki/List_of_common_resolutions#/media/File:Vector_Video_Standards.svg

https://www.reddit.com/r/imax/comments/rhkic3/various_aspect_ratios_on_169_178/

https://www.youtube.com/watch?v=d-z6LOGwOj4

reference that moment before the screening staerts in whicvh the cinema projector adjusts its standard aspect ratio to the film's and you see projected black bars seamlessly shifting on the black-because-non-projected-on screen

I want to make a video piece consisting only in these variations of aspect ratio. continuosly adjusting aspect ratios - one morphing into another