Re: Aspect Ratios on video discs etc

From: Ken Bawcom (email suppressed)
Date: Sat Sep 02 2006 - 18:46:30 PDT

Okay, I see what you mean now, using every pixel in an anamorphic DVD
to carry picture content, regardless of aspect ratio. Yes, I suppose it
would be easy enough for a DVD to carry a flag noting the size of the
unsqueeze. The question in my mind, that I don't have the technical
knowledge to answer, is, would a digital display device designed to
display things at the 16x9 aspect ratio, as they all are, be able to
handle an unsqueeze that includes no information on what to display
above and below the unsqueezed frame? For a 2.35:1 'scope film, that
would be a lot of space. If that is not a problem for displays, yes,
certainly they should do it, at least for the most common aspect
ratios, like 1.85:1, and 2.35:1. Perhaps that will come, down the road.
It should be easy to make players that would output those other
unsqueezes to displays unequipped to handle them in a form they can
use. Blu-ray and HD-DVD are in their infancy. Maybe later!

Ken B.

Quoting Freya <email suppressed>:

> --- Ken Bawcom <email suppressed> wrote:
>> Perhaps I don't understand what you are saying, but
>> well, there are
>> plenty of anamorphic DVDs of films in the 2.35:1
>> aspect ratio that have
>> black masks, top and bottom, thus preserving the
>> original aspect
>> ratio. Of course, they do not use that extra bit of
>> black to increase
>> resolution. Is that what you mean?
> Yes. They are only letterboxed to 16:9 anamorphic
> instead of being stored 2.35:1 anamorphic without
> letterboxing on the disc.
>> I do think that for many films shot in 1.85:1, they
>> DO make them fill
>> the 16x9 screen, thus losing a bit from both sides,
>> probably because
>> they think the general public will prefer it. But
>> that is not
>> necessary, just a decision by those producing the
>> disc. I don't have
>> any to check, but I would bet that all Criterion
>> DVDs preserve the
>> original aspect ratio, even when it is 1.85:1.
> This is all true but the point I'm making is NOT that
> I want the films to fill the screen but that they
> should be stored on the disc without letterboxing.
> When they are unsqueezed for showing on the screen
> they may well appear letterboxed, but I don't want to
> store them on the disc that way, they should use the
> full resolution available on the disc.
> love
> Freya
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