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Invisibletiny_rabid_birds
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4 pin s-video VS 7 pin s-video to component?
    #15006380 - 08/31/11 12:17 PM (12 years, 8 months ago)

i've recently purchased a 25' 4 pin s-video cable to connect my desktop PC (vid card is a radeon 4850) to my somewhat older analog television.

the s-video port on my vid card is 7 pin, but i've read that i should still be able to get the signal going on a 4 pin s-vid cable.

the other, and more expensive, option would be to use an adapter supplied when the vid card was purchased to convert the 7-pin s-vid signal to component RGB and purchase a 25' RGB component cable to connect to the television.

so my question is: does anyone know if it would be worth the extra effort to utilize the 7-pin to component connection method?  i've already purchased the 25' 4 pin s-video cable from ebay for like 5 bucks, but if the picture quality would be noticeably better then i might be persuaded to change my plan of attack.


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OfflineArugula-375
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Registered: 06/19/11
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Re: 4 pin s-video VS 7 pin s-video to component? [Re: tiny_rabid_birds]
    #15006445 - 08/31/11 12:32 PM (12 years, 8 months ago)

You are fine with 4-pin connector. 7-pin isn't even a standard so the other three pins might be the composite (RGB) or might even be something else.
RGB inputs were used with older TVs so S-Video (set signal from the 4 pins) is actually superior.

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Invisibletiny_rabid_birds
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Re: 4 pin s-video VS 7 pin s-video to component? [Re: Arugula-375]
    #15006904 - 08/31/11 01:53 PM (12 years, 8 months ago)

well it's not composite i'm considering.  it's component.  and i do know for a fact that component video is higher quality than composite.

i also know what the other 3 pins are in my 7 pin s-video connection because the adapter cord i pictured in my original post actually came with my video card.  this tells me that the other 3 pins are for component functionality rather than composite.

i suppose i was just wondering if anyone has had experience watching the graphics resultant from both methods.

oh well, it probably doesn't even matter that much.  when the 4-pin s-video cable gets here i'll see if the picture is bearable or not.  if not, i'll spend 8 bucks on amazon for a 25' RGB component cable to plug into my 7-pin s-video adapter, which i can only assume would give me the best possible video my card is capable of putting out short of DVI and HDMI (neither of which are compatible with my TV).


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Offlinecokane
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Re: 4 pin s-video VS 7 pin s-video to component? [Re: tiny_rabid_birds]
    #15008677 - 08/31/11 07:29 PM (12 years, 8 months ago)

This reminds me of a 4 head VCR vs. a 6 head VCR. I don't know much about S-video cables but something tells me the 7 pin cable is better, but if you are using an older TV wont the picture kind of suck no matter what you do... just saying.

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OfflineSeussA
Error: divide byzero


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Re: 4 pin s-video VS 7 pin s-video to component? [Re: cokane]
    #15010548 - 09/01/11 04:56 AM (12 years, 8 months ago)

> but something tells me the 7 pin cable is better,

Something lied to you.

A 'standard' video signal has two basic components, chrominance (CrCb) and an intensity (Y).  In a composite cable, these signals are combined onto a single wire, thus two wires (signal and ground) carry the signal.  This is the yellow RCA cable, typically.  S-Video breaks the two (chrominance and intensity) apart, thus you end up with four wires (chrominance, chrominance ground, intensity, and intensity ground).  The 7-pin s-video is not an industry standard.  The extra three signals are defined by the equipment manufacturer and can be anything from non-connects (no signals at all) to digital signals.  Component video, which is higher quality, breaks the chrominance into two parts (Cr and Cb) and then shifts (or rotates) all three (Y and Cr and Cb) into the RGB colorspace.  Component video needs six conductors to carry the three signals and three grounds.


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Offlinecokane
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Re: 4 pin s-video VS 7 pin s-video to component? [Re: Seuss]
    #15012044 - 09/01/11 01:18 PM (12 years, 8 months ago)

Something is a son of a bitch.

I didn't do any research and went with my gut feeling that 7 is greater than 4.  (7>4)

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OfflineSeussA
Error: divide byzero


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Re: 4 pin s-video VS 7 pin s-video to component? [Re: cokane]
    #15013734 - 09/01/11 07:17 PM (12 years, 8 months ago)

> Something is a son of a bitch.

:rofl:

> I didn't do any research and went with my gut feeling that 7 is greater than 4.  (7>4)

And that is why I hate marketers... bastard spawn of demons, all of them.


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