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1. Re: Slightly confusion with pixel aspect ratios
Cocovanna Jul 11, 2011 4:28 AM (in response to Cocovanna)For NTFS, of course read NTSC (!)
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2. Re: Slightly confusion with pixel aspect ratios
Cocovanna Jul 11, 2011 4:49 AM (in response to Cocovanna)I have found the (historical) explanation. It seems, that 4:3 is not 4:3 (meaning the media players I've have tested are faulty ...):
http://lipas.uwasa.fi/~f76998/video/conversion/ referenced from http://en.wikipedia.org/wiki/Pixel_aspect_ratio
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3. Re: Slightly confusion with pixel aspect ratios
Colin Brougham Jul 11, 2011 4:53 AM (in response to Cocovanna)Because for a long, long time, we were being lied to about what the correct pixel aspect ratios actually were. This article pertains to After Effects CS4, but is relevant to Premiere Pro, as well: PAR for the Course - ProVideo Coalition.com
It gets pretty technical and "mathy," but, there it is.
Ultimately... don't worry about it.
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4. Re: Slightly confusion with pixel aspect ratios
Cocovanna Jul 11, 2011 5:21 AM (in response to Colin Brougham)Great article, tnx! (And I don't worry, was just curious :-) )
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5. Re: Slightly confusion with pixel aspect ratios
Colin Brougham Jul 11, 2011 5:22 AM (in response to Cocovanna)Yeah, but curiousity and cats and pixel aspect ratios... well... you know how it goes
Glad that was helpful though; it's pretty interesting if not a bit mind-warping at this time of the day
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6. Re: Slightly confusion with pixel aspect ratios
Todd_Kopriva Jul 11, 2011 7:50 PM (in response to Colin Brougham)There's some more information linked to from here, if you want to dig even deeper into this historical mess.
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7. Re: Slightly confusion with pixel aspect ratios
JSS1138 Jul 11, 2011 11:35 PM (in response to Colin Brougham)we were being lied to about what the correct pixel aspect ratios actually were.
I think we still are. The current math is based on 702 (or is it 704) width from the days of analog. But in the world of DV, the entire 720 should be considered the clean aperture.
This yeilds a correct Widescreen PAR of 1.185, not 1.2121.
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8. Re: Slightly confusion with pixel aspect ratios
Colin-B Jul 12, 2011 1:23 PM (in response to JSS1138)And some historical details brought together from various original specs:





