Post #390320

Author: DVD-BOY
Parent topic: 4:3(1.33:1) to 16:9 question
Link to post in topic: https://originaltrilogy.com/post/id/390320/action/topic#390320
Date created: 29-Dec-2009, 11:59 AM

I'm a little confused by this as well. 640x480 is 1.33:1, so if you calculate:

9/16*640 = 360 which is 120 less than 480, and therefore 60 off the top and bottom.

BUT, if you calculate 9/16*720 = 404-ish which is more what I would expect for the correct value.

Of course this isn't taking pixel aspect ratios into account...

Otherwise there's Citizen's Aspect Ratio Calculator: