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dzanre1 Absent Member.
Absent Member.
1291 views

Any video experts here?

Is there such a thing as a component (not composite) to RF modulator that will
allow a component output (RGB cords) to be translated back to coax cable without
losing HD quality?

Back in the old analog days, we had very good RF modulators, but all I can find
right now are composite to RF, and that of course doesn't give me any HD
advantanges!

Thanks.

--
Danita
Novell Knowledge Partner
Moving GroupWise to Linux?
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15 Replies
Community Manager kgroneman Community Manager
Community Manager

Re: Any video experts here?

Just curious...and I don't have an answer...but what scenario do you
have that you would want/need to do that?

--
Kim - 4/15/2010 11:50:43 AM
--
My computer used to beat me at chess all the time, but then I changed the competition to kick boxing.......
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grimlock1 Absent Member.
Absent Member.

Re: Any video experts here?

On 4/15/2010 12:43 PM, DZanre wrote:
> Is there such a thing as a component (not composite) to RF modulator that will
> allow a component output (RGB cords) to be translated back to coax cable without
> losing HD quality?
>
> Back in the old analog days, we had very good RF modulators, but all I can find
> right now are composite to RF, and that of course doesn't give me any HD
> advantanges!
>
> Thanks.
>



I see these, but according to the many forums I've looked at, such
beasts should not exist?

http://www.google.com/products/catalog?q=component+to+coax&oe=utf-8&rls=org.mozilla:en-US:official&client=firefox-a&um=1&ie=UTF-8&cid=8809791342200199654&ei=2lPHS-mtBZG6Nff1mdwI&sa=X&oi=product_catalog_result&ct=result&resnum=1&ved=0CBgQ8wIwAA#ps-sellers


http://www.google.com/products/catalog?q=component+to+coax&oe=utf-8&rls=org.mozilla:en-US:official&client=firefox-a&um=1&ie=UTF-8&cid=4667026748215100392&ei=2lPHS-mtBZG6Nff1mdwI&sa=X&oi=product_catalog_result&ct=image&resnum=2&ved=0CBwQ8gIwAQ#




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dzanre1 Absent Member.
Absent Member.

Re: Any video experts here?

kgroneman wrote:

> Just curious...and I don't have an answer...but what scenario do you have that
> you would want/need to do that?


Our Comcast HD cable box has HDMI, Composite and Component outputs - no coax.
The input to our TV adapter on the Mac Mini has coax, S-Video and composite.
Plugging the cable in directly gives us beautiful HD channels for those that are
not encrypted. For the encrypted channels, it's looking like I would have been
better off to have kept the standard-def cable box, because the only thing I'm
getting in HD is 16:9 - but standard def picture quality!

Unless I can find a way to get HD video out of the Comcast box and into the
EyeTV adapter in HD it's gonna make me mad that I went to the trouble to get the
different cable box!

Oh - and I found a very good solution, but it was like $900 <heehee>.

--
Danita
Novell Knowledge Partner
Moving GroupWise to Linux?
http://www.caledonia.net/gwmove.html
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grimlock1 Absent Member.
Absent Member.

Re: Any video experts here?

On 4/15/2010 12:43 PM, DZanre wrote:
> Is there such a thing as a component (not composite) to RF modulator that will
> allow a component output (RGB cords) to be translated back to coax cable without
> losing HD quality?
>
> Back in the old analog days, we had very good RF modulators, but all I can find
> right now are composite to RF, and that of course doesn't give me any HD
> advantanges!
>
> Thanks.
>


Not helping are sites like this

http://www.ehow.com/how_5844263_convert-video-audio-signals-coaxial.html


Read/White/Yellow cables != component. They are referring to composite
video. (yellow) and Stereo (Red/White).

Component cables are Red (Pr/Cr), Blue (Pb/Cb) and Green (Y) cables.
Half of the sites I've seen blatantly screw this up.




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grimlock1 Absent Member.
Absent Member.

Re: Any video experts here?

On 4/15/2010 1:12 PM, DZanre wrote:
> The input to our TV adapter on the Mac Mini has coax, S-Video and composite.
>


And none of those are HD. Well the coax.. could be, but without knowing
the specific adapter it's hard to say. I bet the adapter is SD only.

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Bob-O-Rama
Visitor.

Re: Any video experts here?

dzanre;1962653 wrote:
Is there such a thing as a component (not composite) to RF modulator that will
allow a component output (RGB cords) to be translated back to coax cable without
losing HD quality?


The great thing about my job is that I'm partially responsible for almost anything with electrons in it.

We run our own cable TV facility with about 3000 subscribers, aka "students." And we have a digital head end combiner / injector. Its allows you to take HD, from HDMI or component and create a digital channel. That channel could be 1080i or whatever. You could "create" completely digital channel, e.g. 123-1, and it would have all the hi-deffy goodness of the original signal.

Oh, that costs $33K.

On the cheap you'd use somemthing like this or this Google for "HDTV digital RF modulator" or whatever and you'll find others.

HTH

-- Bob
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dzanre1 Absent Member.
Absent Member.

Re: Any video experts here?

Patrick Farrell wrote:

> Well the coax.. could be,


It is.

--
Danita
Novell Knowledge Partner
Moving GroupWise to Linux?
http://www.caledonia.net/gwmove.html
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dzanre1 Absent Member.
Absent Member.

Re: Any video experts here?

Patrick Farrell wrote:

> Component cables are Red (Pr/Cr), Blue (Pb/Cb) and Green (Y) cables. Half of
> the sites I've seen blatantly screw this up.


Yep - they don't get it!

--
Danita
Novell Knowledge Partner
Moving GroupWise to Linux?
http://www.caledonia.net/gwmove.html
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dzanre1 Absent Member.
Absent Member.

Re: Any video experts here?

Bob-O-Rama wrote:

> On the cheap you'd use somemthing like 'this'
> (http://www.crwww.com/QMOD-HD.asp?gclid=CLHT44mpiaECFdlw5QodqjlLOA) or 'this'
> (http://www.zeevee.com/residential/zvbox170?gclid=COH15ripiaECFQ0M2godhToTOg)
> Google for "HDTV digital RF modulator" or whatever and you'll find others.


Those look good, but I don't see prices yet - so I don't know how "cheap" it is
<g>

--
Danita
Novell Knowledge Partner
Moving GroupWise to Linux?
http://www.caledonia.net/gwmove.html
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dzanre1 Absent Member.
Absent Member.

Re: Any video experts here?

Patrick Farrell wrote:

> I see these, but according to the many forums I've looked at, such beasts
> should not exist?


I did see those, but like you was skeptical. I guess for the price (and
purchasing from someplace that is good about returns) it couldn't hurt to try!

--
Danita
Novell Knowledge Partner
Moving GroupWise to Linux?
http://www.caledonia.net/gwmove.html
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adrockk Trusted Contributor.
Trusted Contributor.

Re: Any video experts here?

DZanre wrote:

> Our Comcast HD cable box has HDMI, Composite and Component outputs -
> no coax. The input to our TV adapter on the Mac Mini has coax,
> S-Video and composite. Plugging the cable in directly gives us
> beautiful HD channels for those that are not encrypted.


So, it sounds like your Mac has a digital tuner in it, at least able to
decode standard QAM cable signals. If you just hook up an antenna can
you get HD DTV over the air? If so then it's got an ATSC tuner too.

> For the
> encrypted channels, it's looking like I would have been better off to
> have kept the standard-def cable box, because the only thing I'm
> getting in HD is 16:9 - but standard def picture quality!


You don't have a way to get the signal from the box to the mac in HD.
The only way I could see this working is to get a modulator to change
HDMI into QAM (like cable uses) or ATSC (like the new digital OTA
stations use). Unfortunately, the cheapest thing that the google
machine turns up is this: http://zeevee.com/residential/zvbox150 @ $1K

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adrockk Trusted Contributor.
Trusted Contributor.

Re: Any video experts here?

DZanre wrote:

> Patrick Farrell wrote:
>
> > I see these, but according to the many forums I've looked at, such
> > beasts should not exist?

>
> I did see those, but like you was skeptical. I guess for the price
> (and purchasing from someplace that is good about returns) it
> couldn't hurt to try!


Yes it could 😉 That's just pass through cabling, No conversion. We
use them here to run video cables so you can fit a cable with alot of
fat ends on it through a skinny conduit.

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dzanre1 Absent Member.
Absent Member.

Re: Any video experts here?

Adam Gabriel wrote:

> So, it sounds like your Mac has a digital tuner in it, at least able to decode
> standard QAM cable signals. If you just hook up an antenna can you get HD DTV
> over the air? If so then it's got an ATSC tuner too.


Yes - so for now what I've done is have both plugged in. I have the cable
coming in and it's doing all of the "local" HDTV signals (because Comcast cannot
by law encrypt those), and I'm using the QAM signals for everything else I can.
The only HD I'm taking from the cable box for now are channels that are HD only.
I'm happier in that the channels we record most (local) are decent HD again
because they are QAM, but it would be nice to not have to fuss around with it
so!

> You don't have a way to get the signal from the box to the mac in HD. The only
> way I could see this working is to get a modulator to change HDMI into QAM
> (like cable uses) or ATSC (like the new digital OTA stations use).
> Unfortunately, the cheapest thing that the google machine turns up is this:
> http://zeevee.com/residential/zvbox150 @ $1K


Yep - and I don't think my husband would approve <heehee>

--
Danita
Novell Knowledge Partner
Moving GroupWise to Linux?
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dzanre1 Absent Member.
Absent Member.

Re: Any video experts here?

Adam Gabriel wrote:

> Yes it could 😉 That's just pass through cabling, No conversion. We use them
> here to run video cables so you can fit a cable with alot of fat ends on it
> through a skinny conduit.


Okay - then nothing for that. EyeTV also has a Hauppage card for the Mac that
will do component input. I could PROBABLY sell my current EyeTV adapter on eBay
and get that one so that I'm using the cable box for everything. I'll hold off
awhile though and see how this "duality" I've concocted works.

--
Danita
Novell Knowledge Partner
Moving GroupWise to Linux?
http://www.caledonia.net/gwmove.html
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