I'm creating an explainer video in After Effects but I haven't been able to figure out which pixel aspect ratio to use. I know what the PAR is, but I don't know what difference it makes in the final product.
I would like to know how to choose the best PAR for any situation but as a reference, here are some specific details about this particular video. It is an animated video using vector images. It will be in 4k resolution and uploaded to Vimeo.
I appreciate any help y'all can offer.