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.

1 Answer 1


Well obviously an incorrect pixel aspect ratio would distort the image. Very few formats today are anything other than 1:1, that is square pixels. So the most notable formats that are non square are the two major SD formats

  • 4:3 PAL which has a aspect of 59:54, or in 12:11 in digital form and the differently stretched 16:9 PAL that has a aspect 118:81 or 16:11.
  • 4:3 NTSC has a puixel aspect of 10:11 and ist stretched out 16:9 variant has a aspect of 40:33
  • And then you have the somewhat odd fellow the HDV / HDCAM that ahs a pixel aspect of 4:3

All, modern web format videos are 1:1 including 1080p/i, DCI 4K (which is sometimes called 4K), UHD-1 (called 4K)....

So you should be using a 1:1 ratio.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.