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Component Video Questions

Author
30 Oct 2007 7:46 PM
david.cams
Recently, I upgraded my old Sky satellite set top box to a new Pace
DS230 slim line decoder, which has the option to output both composite
video and component video. With Sky TV (in New Zealand) shown on a
good quality LCD TV, would you expect that you should get a noticeably
better picture from component video output than you would from
composite video output?

I notice that Sony's latest hard disk drive / DVD recorders do not
have component video input, but they do have inputs for composite
video, S Video, and ilink (DV) video. Nevertheless, they do have both
component video and and HDMI output.

This means that you cannot record from the Pace DS230 using its
component video output. When high definition SKY and Freeview
broadcasts come to air, would it be an advantage to have a video
recorder that has component video input? I guess that you will soon be
able to buy blu-ray hard drive / DVD recorders, but I was a bit
surprised that some DVD recorders do not presently have component
video input. I wonder why this would be the case?

Thanks for your help.

David C

Author
30 Oct 2007 10:53 PM
Mark C
david.c***@hotmail.com wrote in
news:1193773588.386388.102380@q5g2000prf.googlegroups.com:

> Recently, I upgraded my old Sky satellite set top box to a new
> Pace DS230 slim line decoder, which has the option to output
> both composite video and component video. With Sky TV (in New
> Zealand) shown on a good quality LCD TV, would you expect that
> you should get a noticeably better picture from component video
> output than you would from composite video output?

When displayed on a good CRT TV, there is a VERY noticable difference
between composite and S-video or RGB (I would expect Component to
perform as good or better than RGB).

With composite, there is dot-crawl when viewing the Sky menus, which
almost completely disapears with S-video or RGB.

(Sorry, I don't know for sure if an LCD would be different.)

Composite is about as bad as it gets, because the frequency used for
the colour information overlaps the frequency used for the high--
spatial-frequency monochrome signal (IIRC).
Any of the better connection types have separate color information
and are a quantum leap.  On my set, with my eyes, I can't see
any difference between S-video and RGB.

Mark
Author
31 Oct 2007 5:28 AM
Richard
david.c***@hotmail.com wrote:
Show quote
> Recently, I upgraded my old Sky satellite set top box to a new Pace
> DS230 slim line decoder, which has the option to output both composite
> video and component video. With Sky TV (in New Zealand) shown on a
> good quality LCD TV, would you expect that you should get a noticeably
> better picture from component video output than you would from
> composite video output?
>
> I notice that Sony's latest hard disk drive / DVD recorders do not
> have component video input, but they do have inputs for composite
> video, S Video, and ilink (DV) video. Nevertheless, they do have both
> component video and and HDMI output.
>
> This means that you cannot record from the Pace DS230 using its
> component video output. When high definition SKY and Freeview
> broadcasts come to air, would it be an advantage to have a video
> recorder that has component video input? I guess that you will soon be
> able to buy blu-ray hard drive / DVD recorders, but I was a bit
> surprised that some DVD recorders do not presently have component
> video input. I wonder why this would be the case?

I had a play a while back and the best input was RGB thru a scart
connection, no options to change the to component, and since sky boxes
cant output svideo and component at the same time it means you have to
choose between getting a good recording or watching it properly.
Composite is evil and should die.

Also, its a shame that only one scart on the sky box can do component
Author
31 Oct 2007 6:39 AM
david.cams
On Oct 31, 6:28 pm, Richard <r***@ihug.co.nz> wrote:
Show quote
> david.c***@hotmail.com wrote:
> > Recently, I upgraded my old Sky satellite set top box to a new Pace
> > DS230 slim line decoder, which has the option to output both composite
> > video and component video. With Sky TV (in New Zealand) shown on a
> > good quality LCD TV, would you expect that you should get a noticeably
> > better picture from component video output than you would from
> > composite video output?
>
> > I notice that Sony's latest hard disk drive / DVD recorders do not
> > have component video input, but they do have inputs for composite
> > video, S Video, and ilink (DV) video. Nevertheless, they do have both
> > component video and and HDMI output.
>
> > This means that you cannot record from the Pace DS230 using its
> > component video output. When high definition SKY and Freeview
> > broadcasts come to air, would it be an advantage to have a video
> > recorder that has component video input? I guess that you will soon be
> > able to buy blu-ray hard drive / DVD recorders, but I was a bit
> > surprised that some DVD recorders do not presently have component
> > video input. I wonder why this would be the case?
>
> I had a play a while back and the best input was RGB thru a scart
> connection, no options to change the to component, and since sky boxes
> cant output svideo and component at the same time it means you have to
> choose between getting a good recording or watching it properly.
> Composite is evil and should die.
>
> Also, its a shame that only one scart on the sky box can do component- Hide quoted text -
>
> - Show quoted text -

Thanks a lot for the replies to date. I have connected the Sky
decoder's composite output signal to the DVD recorder (because for
some reason my recorder doesn't have a component video input) and
Sky's component output to "component in" on the LCD TV. I was told
that the decoder can't have two component outputs, so it has one
composite output and one component output.

With my decoder, it is outputting composite video and component video
at the same time (when both sets of cables are attached to the
decoder). To be honest, I think the picture quality of both the
composite and component outputs from the Sky decoder are much the
same, the component outputted picture is not clearly superior to the
composite one, which surprises me a little. Perhaps there is a limit
to how much a "basic" composite Sky picture can be improved on?

I am not sure why Sony's latest DVD recorder doesn't have component
input, I'm sure there is a logical reason for this, because it
certainly has all the other bells and whistles that you would expect
from a top line DVD / HDD recorder!

Regards, David
Author
31 Oct 2007 8:09 AM
J Brockley
Show quote
>
> Thanks a lot for the replies to date. I have connected the Sky
> decoder's composite output signal to the DVD recorder (because for
> some reason my recorder doesn't have a component video input) and
> Sky's component output to "component in" on the LCD TV. I was told
> that the decoder can't have two component outputs, so it has one
> composite output and one component output.
>
> With my decoder, it is outputting composite video and component video
> at the same time (when both sets of cables are attached to the
> decoder). To be honest, I think the picture quality of both the
> composite and component outputs from the Sky decoder are much the
> same, the component outputted picture is not clearly superior to the
> composite one, which surprises me a little. Perhaps there is a limit
> to how much a "basic" composite Sky picture can be improved on?
>
> I am not sure why Sony's latest DVD recorder doesn't have component
> input, I'm sure there is a logical reason for this, because it
> certainly has all the other bells and whistles that you would expect
> from a top line DVD / HDD recorder!
>
> Regards, David
>
Component in is not common and you are more likely to see RGB in as is the
case with Panasonic. RGB is actually superior in theory though cable length
has to be kept short. The deoder I had allowed me to feed RGB to the
recorder and S-Video to the TV.
Re quality difference between composite and component should be reasonably
clear especially on text.
Author
31 Oct 2007 8:31 AM
david.cams
Show quote
On Oct 31, 9:09 pm, "J Brockley" <jsbrock***@hotmail.com> wrote:
> > Thanks a lot for the replies to date. I have connected the Sky
> > decoder's composite output signal to the DVD recorder (because for
> > some reason my recorder doesn't have a component video input) and
> > Sky's component output to "component in" on the LCD TV. I was told
> > that the decoder can't have two component outputs, so it has one
> > composite output and one component output.
>
> > With my decoder, it is outputting composite video and component video
> > at the same time (when both sets of cables are attached to the
> > decoder). To be honest, I think the picture quality of both the
> > composite and component outputs from the Sky decoder are much the
> > same, the component outputted picture is not clearly superior to the
> > composite one, which surprises me a little. Perhaps there is a limit
> > to how much a "basic" composite Sky picture can be improved on?
>
> > I am not sure why Sony's latest DVD recorder doesn't have component
> > input, I'm sure there is a logical reason for this, because it
> > certainly has all the other bells and whistles that you would expect
> > from a top line DVD / HDD recorder!
>
> > Regards, David
>
> Component in is not common and you are more likely to see RGB in as is the
> case with Panasonic. RGB is actually superior in theory though cable length
> has to be kept short. The deoder I had allowed me to feed RGB to the
> recorder and S-Video to the TV.
> Re quality difference between composite and component should be reasonably
> clear especially on text.- Hide quoted text -
>
> - Show quoted text -

I found this background info. on component and RGB video:

http://www.projectorcentral.com/component.htm

Although the Sony DVD recorder has S-Video input, the Sky technician
said he didn't have a scart to S-Video cord and he said S-Video from
Sky was not always successful (I'm not sure why). I have looked
carefully at the component vs composite pictures I get on Sky, and
even on smallish text, both are quite sharp. Perhaps the equipment is
doing some upscaling along the way with the composite signal received
by the DVD recorder?
Author
31 Oct 2007 8:59 AM
Richard
david.c***@hotmail.com wrote:

> Although the Sony DVD recorder has S-Video input, the Sky technician
> said he didn't have a scart to S-Video cord and he said S-Video from
> Sky was not always successful (I'm not sure why). I have looked
> carefully at the component vs composite pictures I get on Sky, and
> even on smallish text, both are quite sharp. Perhaps the equipment is
> doing some upscaling along the way with the composite signal received
> by the DVD recorder?

On static text they can use a 3d comb filter to get rid of most of the
zipper effects, but when things are moving that doesnt work. Its
trickery to get it looking better on test patterns.

Try bringing up the menu (yellow on blue - always pretty bad, not as bad
as magenta on green but close) and then move the selection and watch the
edges when it first appears, also the edges of the big yellow channel
number when you type it in should show major zippering on composite.
Author
1 Nov 2007 2:07 AM
david.cams
On Oct 31, 9:59 pm, Richard <r***@ihug.co.nz> wrote:
Show quote
> david.c***@hotmail.com wrote:
> > Although the Sony DVD recorder has S-Video input, the Sky technician
> > said he didn't have a scart to S-Video cord and he said S-Video from
> > Sky was not always successful (I'm not sure why). I have looked
> > carefully at the component vs composite pictures I get on Sky, and
> > even on smallish text, both are quite sharp. Perhaps the equipment is
> > doing some upscaling along the way with the composite signal received
> > by the DVD recorder?
>
> On static text they can use a 3d comb filter to get rid of most of the
> zipper effects, but when things are moving that doesnt work. Its
> trickery to get it looking better on test patterns.
>
> Try bringing up the menu (yellow on blue - always pretty bad, not as bad
> as magenta on green but close) and then move the selection and watch the
> edges when it first appears, also the edges of the big yellow channel
> number when you type it in should show major zippering on composite.

Thanks Richard for this suggestion, this is an excellent and demanding
test! I tried it out, and with the component video, the yellow edges
on the preferences circles and the writing underneath the circles held
steady and showed no signs of shimmering. But, with the composite
video, when you viewed the TV from about 1 metre away, we could see a
small amount of shimmering on the edges of the circles and the writing
underneath the circles. However, when we viewed the 40 inch LCD TV
from the rear of the lounge (about 4 metres away), you couldn't really
notice this shimmering on composite video at all (unless you looked
very hard for it)!

So although the picture quality is slightly improved when using
component video input, the improvement is hardly noticeable on our TV
unless you are very close to the screen. Nevertheless, this shows that
it would pay to connect the DVD recorder to an S Video or RGB or
component video cable, rather than a composite one. However, do you
think there would be much difference using Richard's test between S
Video and component input?

On a "normal" moving picture, viewed about 4 metres from the screen, I
still can't tell the difference between a composite and a component
picture, but on a still picture, there is a very small drop off in
quality when a composite cable is used and when you go very close to
the screen.

Regards, David
Author
1 Nov 2007 12:40 AM
david.cams
Show quote
On Oct 31, 9:09 pm, "J Brockley" <jsbrock***@hotmail.com> wrote:
> > Thanks a lot for the replies to date. I have connected the Sky
> > decoder's composite output signal to the DVD recorder (because for
> > some reason my recorder doesn't have a component video input) and
> > Sky's component output to "component in" on the LCD TV. I was told
> > that the decoder can't have two component outputs, so it has one
> > composite output and one component output.
>
> > With my decoder, it is outputting composite video and component video
> > at the same time (when both sets of cables are attached to the
> > decoder). To be honest, I think the picture quality of both the
> > composite and component outputs from the Sky decoder are much the
> > same, the component outputted picture is not clearly superior to the
> > composite one, which surprises me a little. Perhaps there is a limit
> > to how much a "basic" composite Sky picture can be improved on?
>
> > I am not sure why Sony's latest DVD recorder doesn't have component
> > input, I'm sure there is a logical reason for this, because it
> > certainly has all the other bells and whistles that you would expect
> > from a top line DVD / HDD recorder!
>
> > Regards, David
>
> Component in is not common and you are more likely to see RGB in as is the
> case with Panasonic. RGB is actually superior in theory though cable length
> has to be kept short. The deoder I had allowed me to feed RGB to the
> recorder and S-Video to the TV.
> Re quality difference between composite and component should be reasonably
> clear especially on text.- Hide quoted text -
>
> - Show quoted text -

I checked out the latest Panasonic 250GB HD DVD recorder (DMR-EH67GN-
K), and my retail store was advised by Panasonic that it only has S-
Video in, not RGB or component video in. However, it does have
component video out and HDMI out. This is also the case with Sony's
latest DVD recorders.
Author
31 Oct 2007 10:10 PM
Mark C
david.c***@hotmail.com wrote in
news:1193812765.921668.130470@t8g2000prg.googlegroups.com:

> I was told that the decoder can't have two component
> outputs, so it has one composite output and one component
> output.

SOME Sky boxes can do S-video and component at the same time
(although many cannot).
I have a Pace DSR2000 which can do so (or so the menus say).

You may want to get your decoder swapped out for a Pace DSR2000 (or
possibly the later Motorolas also do it?) and you could then get S-
video into your recorder.

Mark
Author
1 Nov 2007 7:35 AM
david.cams
On Nov 1, 11:10 am, Mark C <mar...@somewhere.invalid> wrote:
Show quote
> david.c***@hotmail.com wrote innews:1193812765.921668.130***@t8g2000prg.googlegroups.com:
>
> > I was told that the decoder can't have two component
> > outputs, so it has one composite output and one component
> > output.
>
> SOME Sky boxes can do S-video and component at the same time
> (although many cannot).
> I have a Pace DSR2000 which can do so (or so the menus say).
>
> You may want to get your decoder swapped out for a Pace DSR2000 (or
> possibly the later Motorolas also do it?) and you could then get S-
> video into your recorder.
>
> Mark

I tried to connect Scart from the Pace DS230 decoder to S Video on the
TV. Result: I got a black and white picture which had lots of whirly
artifacts in it! The cable is a good one with gold connectors, so it
shouldn't be a cable problem.

Before connecting the scart to S Video lead, I disconnected the Scart
to component cable. I tried the scart to S Video cable cable in both
of the decoder's outlets, and I got a b & w picture both times, so
back to the drawing board with S Video! I remember this also happened
when I tried S Video with Sky a few years back, so I'm not sure why
scart to component works, but scart to S Video doesn't! Perhaps yet
another decoder is needed (at a swap over cost of $40) as suggested by
Mark.

Regards, David C

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