if you are planning to play it back on a widescreen TV then that is correct. Televisions have rectangular pixels, so it will stretch itself back out. Computer Monitors have square pixels, so it looks like people are squished. If you don’t have a broadcast monitor hooked up then maybe burn it to DVD and play it back on the TV and you will notice it looks OK.
Check out the After Effects tutorial section here and I’m sure there are a couple articles on Pixel Aspect Ratio.
btw, there is a button somewhere in after effects called “Pixel Aspect Ratio Correction” or something like that, it will let you preview your footage without it looking squished
Michael Duff –
Bearcage Productions, Australia