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Discussion Starter · #1 ·
Say for example I want to connect a device with only a component output to a device with only a s-video input. Is there a transcoder or adapter available that will do this? I've been unable to find one so far.
 

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They do exist. What your talking about is an encoder. I can't tell you specifically where to look, but it would be listed with professional video equipment. They can be expensive new, but you might find a deal on a used one on e-bay. I have one. But it only encodes component or RGB to composite.

Mike
 

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Discussion Starter · #3 ·
You told me just what I needed to know to find one. "Encoder" was the magic word. http://www.avsforum.com/ubb/smile.gif


They're around $400 US and are made by Harmonic Research . The component to NTSC S-video is the CV233A .


What I'd like to know NOW is if this unit will accept 1080i or 480p on the component input, and put a viable signal out on the S-Video output.


Anyone know?

http://www.hrx.com/cv222.jpg

(That's the CV223A which is RGB/S to NTSC S-Video, not to be confused with the CV233A. Why did the choose such a horrible numbering system? http://www.avsforum.com/ubb/tongue.gif )

Quote:
CV233A Inputs: (BNC Connectors)

(R-Y),(B-Y): 0.7Vpp ea., Y: 1.0Vpp, 75 ohm, 15KHz (SMPTE 100% Bars)


Outputs:

Video: (NTSC or PAL composite baseband)

1.0Vpp, 75 ohm, BNC

S-Video: 4 pin mini DIN Connector

Y: 1.0Vpp, C: 0.3Vpp burst, 75 ohm


Controls: none


Performance:

Luminance Bandwith: composite video = 4.5MHz, Y/C = 6MHz

Horiz. Resolution: composite video = 330 lines, Y/C = 480 lines

Signal/noise: >55db
 

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Define viable. I would imagine that there could be such a device for 480p (in the YCbCr color space). However, it would most likely work using line decimation.


From 1080i to 480i; ouch. Who would want to build such a thing?


-Steve


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chmod o+x bin/laden
 

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Grendell,

You didn't state in your initial post that you intended on inputing 1080i or 480p into the encoder. I see by the specs you posted that the component input is 15khz. The unit you show here will not accept 1080i or 480p on its component inputs. Be careful. I just dont think that unit will do what you want. Not only do you want an encoder. You want a scan converter. (Thousands of dollars) Sorry.

Mike


[This message has been edited by HDmike (edited 10-01-2001).]
 

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Low cost scan converters are readily available. Since you're throwing away information, they can be much less expensive than scalers. Although the professional grade ones can be arbitararily expensive http://www.avsforum.com/ubb/smile.gif


The ones I know about are all for progressive RGBHV (computer video) to composite and s-video, so you'll need a YPrPb to RGB transcoder.


Some low cost scan convertor manufacturers are

ADS Technologies http://www.adstech.com/

AITech International http://www.aitech.com/retail.htm

Askey http://www.askey.com/html/scan_conv.html

AVerMedia http://www.aver.com/products/presentation.html

Focus Enhancements http://www.focusinfo.com/products/tv...tview_gold.htm

StarTech http://www.startech.com/allproducts/allproducts.htm


Some low cost transcoder manufacturers are

Audio Authority http://www.audioauthority.com/

Key Digital Systems http://www.keydigital.com/


Key Digital doesn't list their products on their Web site. You'll have to do a web search for their resellers.



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seb
 

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Discussion Starter · #7 ·
It probably isn't worth it in the end... I was trying to figure out a way to feed a 1080i HDTV signal into a legacy device (such as a VCR) with only a composite or S-Video input. Of course it wouldn't record in 1080i.. my confusion was whether the unit affected the signal in any way. Sorry, I'm only an amateur! http://www.avsforum.com/ubb/tongue.gif
 

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Maybe we could get down to the root requirement. I was confused, assuming signal going in the opposite direction (which IScan Pro could handle).


In the downward direction each of my two STBs output to S-Video (which is not identical to 480i assumed digital), including preservation of wide aspect ratio for replay (Dish 6000).


So if analog taping is the root requirement it is easy unless you want to watch component HD and tape S-Video, which I understand some of the newer STBs may allow.


Tim
 

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grendell: most of the HDstb's will downconvert HD to the svideo out for recording on a vcr etc...I knonw the rca dtc100 does
 
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