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Television > HDTV Tech > Re: question ab...
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Re: question about scalers

by phil-news-nospam@[EMAIL PROTECTED] Apr 25, 2008 at 10:26 PM

On Thu, 24 Apr 2008 04:21:16 GMT Wes Newell <w.newell@[EMAIL PROTECTED]
>
wrote:
| On Wed, 23 Apr 2008 22:52:39 +0000, Allen Watson wrote:
| 
|> I've been looking at specifications for video scalers, but as far as I
|> can tell, they provide only the standard presets-- fine for upscaling
|> 480-line stuff to full-screen on a 720p or 1080p monitor.  I want
custom
|> settings that would let me, for example, display 480-line video on the
|> middle 480 lines of a 720p monitor.  Are there scalers that can do
that?
| 
| Set your TV for a 1:1 aspect ratio. That will display it as is. IOW's,
if 
| it's 640x480 and you have a 1366x768 display, it will occupy the center 
| 640x480 pixels. It will be small, but it will be super clear.:-)

Can you list a model that _actually_ does this?  When I set them to 1:1
(not all can even do that) then the 640x480 input ends up as 1024x768,
filling the middle from top to bottom, with black sides (e.g. pillar
boxed).  That _is_ a 1:1 aspect ratio ... just not a 1:1 pixel conversion
ratio.  Converting 640x480 to 1024x768 is a 5:8 conversion ratio.


| I'm assuming all HDTV's have this setting since my inexpensive sets do.

Not the Vizio 32" my brother has.  OTOH, the pillarbox picture looks fine
despite the 5:8 conversion.

What really sucks is when the station sends some 16:9 program in letterbox
over SD.  360 lines out of 480 would be used.  Then that 640x360 picture
gets scaled up to 1024x576 on the 1366x768 screen.  I refer to this using
the made up term "pilletter boxed".  The Vizio set won't zoom it.  It can
stretch it wider, but then it isn't 1:1 aspect anymore.  It needs to have
a 33.3% (3:4) zoom that will obey when selected, even if it things
something
is going to be lost off the edge of the screen.

-- 
|WARNING: Due to extreme spam, I no longer see any articles originating
from  |
|         Google Groups. If you want your postings to be seen by more
readers |
|         you will need to find a different place to post on Usenet.      
   |
| Phil Howard KA9WGN (email for humans: first name in lower case at
ipal.net) |
 




 12 Posts in Topic:
question about scalers
Allen Watson <awatson3  2008-04-23 22:52:39 
Re: question about scalers
Wes Newell <w.newell@[  2008-04-24 04:21:16 
Re: question about scalers
Jan B <nospam@[EMAIL P  2008-04-24 07:00:12 
Re: question about scalers
"Tam" <t-tam  2008-04-24 12:16:06 
Re: question about scalers
pj <pj4380@[EMAIL PROT  2008-04-24 13:14:15 
Re: question about scalers
phil-news-nospam@[EMAIL P  2008-04-25 22:26:33 
Re: question about scalers
Jer <gdunn@[EMAIL PROT  2008-04-24 08:56:50 
Re: question about scalers
phil-news-nospam@[EMAIL P  2008-04-25 22:30:52 
Re: question about scalers
Wes Newell <w.newell@[  2008-04-24 18:34:15 
Re: question about scalers
Allen Watson <awatson3  2008-04-24 23:40:42 
Re: question about scalers
Wes Newell <w.newell@[  2008-04-26 06:56:42 
Re: question about scalers
phil-news-nospam@[EMAIL P  2008-04-27 06:28:08 

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tan12V112 Mon Dec 1 17:45:43 CST 2008.