PDA

View Full Version : explain PAR in depth


stwof
02-13-2003, 06:21 PM
does PAR(pixel aspect ratio) make a big diference?

what PAR would be used for making a 720x480 wmv or avi?

i'm guessing 4:3

Chris
02-13-2003, 07:41 PM
4:3 would mostly be an image aspect ratio (ratio of width to height of the whole image - ie if your image is 4 metres wide, it would be 3 metres high) so the image aspect ratio of 720x480 would be 4.5x3.

pixel aspect ratio defines how any given pixel is displayed, either square (ie 1:1) or some other value like .9 (.9157:1) or 1.9 (1.9:1)It basically distorts your image horisontally, so your 720x480 video, with an aspect ratio of .9 or so would probably look like a TV, on the other hand, if you had a pixel aspect ratio of 2.0 or something like that it would look like a widescreen TV, gettit?

If you are working with WMV's (to be displayed on a computer monitor?) you should just stick with square pixels probably - some computer media players do not compensate for non-square pixels.

stwof
02-13-2003, 08:13 PM
sweet thanks :p

dg
02-13-2003, 08:14 PM
Originally posted by Chris
If you are working with WMV's (to be displayed on a computer monitor?) you should just stick with square pixels probably - some computer media players do not compensate for non-square pixels.

Totally agree with you, Windows Media Player have some issues dealing with non-square pixels, in formats like Mpeg1 and WMV so for digital endings stick with square pixels, and if you want that your videos have a widescreen format just convert them to the respective size in squre pixels.


See Ya!

CGTalk Moderation
01-14-2006, 10:00 AM
This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.