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Old 27th November 2011, 11:08   #23  |  Link
hello_hello
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Join Date: Mar 2011
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Quote:
Originally Posted by TheSkiller View Post
Yes, as stated on the wiki page you linked, those are the official Rec.601 and "common digital" PARs.
Yeah but what about the info above the table?
"Note that sources differ on PARs for common formats – for example, 576 lines (PAL) displayed at 4:3 (DAR) corresponds to either PAR of 12:11 (if 704×576, SAR = 11:9), or a PAR of 16:15 (if 720×576, SAR = 5:4)."

That's what I'm still vague on, because both of those examples give you a PAR of exactly 4:3.
It seems to me most (PAL 4:3) DVDs use a PAR of 16:15 regardless of whether the extra 8 pixels each side contain image or not, but I'm still trying to understand this properly.

As a side note, a bit more browsing through the same wiki page led me to the sight below where they say the HDMI spec specifies an exact 4:3 or 16:9 aspect ratio and refers to the way anamorphic SD video is upscaled.
If it's true maybe it's another indication that exactly 16:9 and 4:3 are more standard than the official standards these days.
http://lurkertech.com/lg/video-syste...xelaspect_hdmi

Last edited by hello_hello; 27th November 2011 at 11:10.
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