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-   -   Upscaling to Hi Def (http://www.homecinemabanter.com/showthread.php?t=42109)

Peter Hayes March 20th 06 10:54 AM

Upscaling to Hi Def
 
charles wrote:

In article .com,
DVDfever Dom wrote:

Of course, if the TV bosses were bothered about a show they could make
the necessary calls to negotiate further repeats even though that would
mean drawing up a new contract. And, of course, they just can't be
bothered.


Not always. Stratford Johns, who appeared in the 60s & 70s in 'Z-Cars',
'Softly, Softly' and other series, refused to allow repeats of programmes
he appeared in. He, apparently, would prefer to appear in something else,
as far as the money was concerned. The may well be others like him.


Does the veto expire when the actor dies? I've noticed "Yes Minister"
being shown regularly only after the deaths of Nigel Hawthorn and Paul
Eddington. Or was that just coincidence?

--

Peter

loz March 20th 06 11:05 AM

Upscaling to Hi Def
 

"Dave Farrance" wrote in message
...
There's only one or two HD-ready *CRT* TVs, and I've not seen any on
the High Street, so almost all HD-ready TVs being sold at the moment
are flat-panels. The ones that I've seen don't seem to have 720 or 1080
lines, but some other number like 768 or 1024 lines.

When showing a standard definition source, a flat-panel will
format-convert the source to its native definition. But when you take
advantage of the upscaling option of one of these DVD players, the
source is format-converted to 720 or 1080 lines, and then
format-converted again by the flat-panel to its native definition - two
format conversions, each blurring the image slightly. It doesn't make
sense.

The upscaling DVD players have HDMI digital outputs - so that's a real
advantage, if you can use it - but it'd be better to leave the player
set to standard-definition output.


I would have agreed that this arguement makes sense.
However, having recently bought an upscaling DVD I am surprised how much
better the PQ is when fed a 720p upscaled picture from the DVD compared to a
"normal" 576p one.
This is down to the quality of the scaler built into the DVD compared to the
one in the TV.

On my HD LCD it doesn't scale the 720p image to fit the 768 pixels, but
leaves a 24 pixel black border on each side.
Whereas if I feed it a 576p source the TV has to upscale it to 720 pixels.
It is clear my DVD does a better job of scaling than the TV.
This wont always be the case of course, depending on what DVD and what TV
you have.

Loz



charles March 20th 06 11:09 AM

Upscaling to Hi Def
 
In article ,
Peter Hayes wrote:
charles wrote:


In article .com,
DVDfever Dom wrote:

Of course, if the TV bosses were bothered about a show they could
make the necessary calls to negotiate further repeats even though
that would mean drawing up a new contract. And, of course, they just
can't be bothered.


Not always. Stratford Johns, who appeared in the 60s & 70s in
'Z-Cars', 'Softly, Softly' and other series, refused to allow repeats
of programmes he appeared in. He, apparently, would prefer to appear in
something else, as far as the money was concerned. The may well be
others like him.


Does the veto expire when the actor dies? I've noticed "Yes Minister"
being shown regularly only after the deaths of Nigel Hawthorn and Paul
Eddington. Or was that just coincidence?


perhaps their heirs needed the money ;-)

--
From KT24 - in drought-ridden Surrey

Using a RISC OS5 computer

V1N March 20th 06 11:17 AM

Upscaling to Hi Def
 

"Dave Farrance" wrote in message
...
"Ed" wrote:

On Sky news they just showed a Denon amplifer thing that supposedly
upscales DVDs and other sources to Hi Def quality.

What does it really do? Or rather, what does it do to the pictures
coming from a standard dvd player to supposedly make them HD


There's only one or two HD-ready *CRT* TVs, and I've not seen any on
the High Street, so almost all HD-ready TVs being sold at the moment
are flat-panels. The ones that I've seen don't seem to have 720 or 1080
lines, but some other number like 768 or 1024 lines.

When showing a standard definition source, a flat-panel will
format-convert the source to its native definition. But when you take
advantage of the upscaling option of one of these DVD players, the
source is format-converted to 720 or 1080 lines, and then
format-converted again by the flat-panel to its native definition - two
format conversions, each blurring the image slightly. It doesn't make
sense.

The upscaling DVD players have HDMI digital outputs - so that's a real
advantage, if you can use it - but it'd be better to leave the player
set to standard-definition output.

--
Dave Farrance


Just my two pence worth.
I'm far too poor to afford a fancy new panel, but a friend of mine got a 37"
or 39" HDTV plasma last year, and when I went around so he could show off,
it looked frankly, bloody terrible... DVDs looking blocky and dirty.

He went and bought a DVD player with an inbuilt upscaler and it made the
world of difference. DVDs look great again now. As has been mentioned
above, I guess it depends on the panel, and how good the onboard upscaler
is. I guess if you buy a panel and realise SD looks poor, it would be
better to buy a standalone upscaler so you could run Digital TV/DVD/Games
consoles through it too.... or just had a thought.... do some of these DVD
players have scart passthrough, which could also benefit from the upscaler?
I guess not, as they just, as the name implies, pass through, but would be
great if they did!

V1N.



Mark A March 20th 06 12:15 PM

Upscaling to Hi Def
 
loz wrote:

It is clear my DVD does a better job of scaling than the TV.


And I don't use either the TV or the DVD to do the scaling. I use an
external scaler, a Lumagen, and it makes pretty much everything look
fantastic on my HiDef Ready DLP RPTV. Some things, depending on the
original quality, look near enough as makes no difference as good as the
true HiDef demos you see running in Dixons and Currys, coming off custom
PCs. Then again, the cheapest Lumagen will set you back near a £1000,
and more if you get it professionally calibrated to your displays. And
the latest ones are set for about four grand when they're released in
the near future. Which is probably more than your TV and DVD combined,
so not for everyone, probably.

Regards

Mark

[email protected] March 20th 06 12:43 PM

Upscaling to Hi Def
 
Matt Overton wrote:
Well, not really true, that's a bit unfair when you consider the scale of
budgets vs Audience ratings. Plus the Americans are a bit mental and spend
money shooting everthing on film whether they need to or not. Even sitcoms
are done on 35mm, never mind 16 or super 16! I don't think the BBC could
justify spending the licence fee doing everthing on film.


Is the cost difference between 16mm and 35mm so great? Compared to the
cost of the entire production?

Mind you, when watching in SD there's little to complain about in the
picture quality of most current BBC drama (in terms of film noise and
grain).

Some older stuff is really shocking. Outdoor film inserts on studio
(VT) comedy are often scratchy, grainy, damaged, and flickery. I know
telecine has improved, but some things look like they were dropped on
the floor, danced on, and _then_ telecinied!

For entire dramas on film, it's quite apparent (usually on ITV, but
often BBC Four) when they've re-transferred film stock recently
compared to using an old composite transfer from a couple of decades
ago. I wonder how often the original film doesn't exist? Or is it just
cost that prevents a new transfer?

I suppose the word "repeats" has a bad name, because when you mention it
over here it stirs memories of Dads Army, Vicar of Dibley and Only Fools and
horses again and again and again and again.......


'nowt wrong with that! I'm amazed how well some episodes of Porridge
and (in a tamer way) Dad's Army stand up - there's lots of similar aged
comedy that doesn't work anymore, which justifies (to me) why some
things are repeated endlessly, while others never are.

There are thousands of progs out there which should be repeated and never
even make it to UK Gold. Where's the good stuff, wasted sitting in a dusty
archive because to bring it out would upset the repeat percentages,
especially against the audience ratings they would be expected to get.


See above.

or provide an example?

Cheers,
David.


Dave Farrance March 20th 06 03:01 PM

Upscaling to Hi Def
 
"loz" wrote:

"Dave Farrance" wrote:
But when you take
advantage of the upscaling option of one of these DVD players, the
source is format-converted to 720 or 1080 lines, and then
format-converted again by the flat-panel to its native definition - two
format conversions, each blurring the image slightly.


I would have agreed that this arguement makes sense.
However, having recently bought an upscaling DVD I am surprised how much
better the PQ is when fed a 720p upscaled picture from the DVD compared to a
"normal" 576p one.
This is down to the quality of the scaler built into the DVD compared to the
one in the TV.


I guess so. Two replies say that the upscaler gives a better result so
practice trumps theory - but I am surprised. You still have to use the
TV's upscaling as well.

On my HD LCD it doesn't scale the 720p image to fit the 768 pixels, but
leaves a 24 pixel black border on each side.


Hang on. 768 is the number of lines. Do you mean that it leaves a gap
at the top and bottom? If not, then the TV is upscaling.

--
Dave Farrance

loz March 20th 06 09:03 PM

Upscaling to Hi Def
 

"Dave Farrance" wrote in message
...
"loz" wrote:

"Dave Farrance" wrote:
But when you take
advantage of the upscaling option of one of these DVD players, the
source is format-converted to 720 or 1080 lines, and then
format-converted again by the flat-panel to its native definition - two
format conversions, each blurring the image slightly.


I would have agreed that this arguement makes sense.
However, having recently bought an upscaling DVD I am surprised how much
better the PQ is when fed a 720p upscaled picture from the DVD compared to
a
"normal" 576p one.
This is down to the quality of the scaler built into the DVD compared to
the
one in the TV.


I guess so. Two replies say that the upscaler gives a better result so
practice trumps theory - but I am surprised. You still have to use the
TV's upscaling as well.

On my HD LCD it doesn't scale the 720p image to fit the 768 pixels, but
leaves a 24 pixel black border on each side.


Hang on. 768 is the number of lines. Do you mean that it leaves a gap
at the top and bottom? If not, then the TV is upscaling.


Yes. It leaves a gap.



Dave Farrance March 20th 06 09:41 PM

Upscaling to Hi Def
 
I see. So that's how it's done.

The 720p digital stream resolution is defined as 1280x720.

But HD-Ready displays with a similar resolution are actually either
15:9 1280x768 displays or 16:9 1366x768 displays.

So in order to display 720p, the 15:9 displays put black bars at the
top and bottom, and the 16:9 displays put a black frame all the way
around wasting 12% of the display.

So I do wonder why the heck they didn't make the displays 1280x720?

--
Dave Farrance

loz March 20th 06 09:50 PM

Upscaling to Hi Def
 

"Dave Farrance" wrote in message
...
I see. So that's how it's done.

The 720p digital stream resolution is defined as 1280x720.

But HD-Ready displays with a similar resolution are actually either
15:9 1280x768 displays or 16:9 1366x768 displays.

So in order to display 720p, the 15:9 displays put black bars at the
top and bottom, and the 16:9 displays put a black frame all the way
around wasting 12% of the display.

So I do wonder why the heck they didn't make the displays 1280x720?


Because they use the same panels with PCs where 768 is a common resolution.
Saves making 2 resolutions of panels.

Loz




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