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s-video to composite

post #1 of 10
Thread Starter 
recently purchased a vizio E420VO. i have comcast digital cable, but not the hd package.. the tv doesnt have an s-video input, but the cable box does..
my question is: would using an s-vid to composite converter be any improvement over a straight composite connection?

i know the sd will only look so good on an hdtv, but there was marked improvement from rf to composite so i'm wondering how much more i can squeeze out of the picture(straight rf connection bypassing cable box let some local hd channels through, pbs was really nice, but i lose 75% of my channels)..
would that work? or would the signal just be like it was, or worse? i'm referring to the lil junction type converter, an inch or so long.. hd package is financially not an option at this point. saved up for months just to get this tv (my 1st hdtv)
post #2 of 10
Quote:
Originally Posted by Gheti View Post

my question is: would using an s-vid to composite converter be any improvement over a straight composite connection?

Highly doubtful. You can buy and try an adapter and judge for yourself. But, If you're strapped for cash, you may want to save that money and put it towards an HD cable box rental.
post #3 of 10
Quote:
Originally Posted by Ratman View Post
Highly doubtful. You can buy and try an adapter and judge for yourself. But, If you're strapped for cash, you may want to save that money and put it towards an HD cable box rental.
For sure. It's a shame that you have a nice new HDTV and you are now still watching SD only in worse quality than what you had before (unless your old TV was defective) because your new HDTV can't display the SD as intended.

If you are really strapped for cash you can easily find the pin-outs for S-video and make your own conversion cable if you have extra composite and S-video cables laying about (geeks like me always do). But as Ratman said, it is HIGHLY doubtful you will see any improvement. I can just about guarantee it would be a waste of time and money to buy a converter.

I would try splitting the RF coaxial with a cheap splitter and feeding the TV directly with one cable to get your HD clear QAM on the TV input, then continue getting your cable channels using the composite input. Perhaps inconvenient for dial-flipping, but at least you would be able to watch network football (and all their other programming) in HD.

Another option if you live in a metro area is to buy a cheap indoor TV antenna, hook it to your TVs RF coaxial input and scan for channels. You may be able to get your broadcast network channels in HD that way, and if you're interested in sports, there is nothing better than broadcast HD (actually, nothing better just in general for TV viewing). Just remember that antenna location and orientation are key to decent reception; use the TVfool website to determine where to aim.

Good luck!
post #4 of 10
No matter... convert s-video to composite or composite to s-video. The video is still composite.

Install a splitter. One directly to the TV's RF/antenna input for HD channels, one to the SD cable box. Switch between AV inputs via the TV as necessary.
post #5 of 10
Thread Starter 
thanks for the input.. i think i have a splitter laying around somewhere, i'll give 'er a go =)
post #6 of 10
If your TV had a S-video input more than likely going S-video from your cable box to your TV would give you a noticeable improvement. Converting S-video to composite for your TV would probably give you a worse picture than just staying composite. As someone else said, composite is composite and the device you use to convert the formats would probably degrade the picture more than just straight composite.
Unfortunately S-video is a dying(or dead) video format. Too bad since for SD it really did improve upon composite quality.
Modulated RF worse quality, composite better, S-video better yet, Component/HDMI best but usually only for HD.
post #7 of 10
Quote:
Originally Posted by jjeff View Post

... and the device you use to convert the formats would probably degrade the picture more than just straight composite.

Just to be clear, the "device" to convert S-Video to composite is just a cable with the appropriate connectors and the S-Video Y and C signals connected together. Not much room for degradation.

Ron
post #8 of 10
If you have comcast digital cable then all of the local HD broadcast channels are available using the clearQAM digital tuner in your Vizio TV. You don't need Comcast's digital service to receive them just connect the cable from the wall outlet direct to the TV. If you could not do this then you wasted your money by buying a HD TV
You get no benfit from converting SD S-Video to SD composite then by just using SD composite in the first place as pointed out by Ratman.
post #9 of 10
Thread Starter 
abandoned the idea of s-vid to composite.. put the splitter in.. can swap between the cable box composite and straight rf now.. the local hd stations are quite nice, and there's a slew of home shopping and public access-ish programming up in the 100's now too with the straight rf.. i'm going to look into getting a different cable box that has better outputs if possible..
don't get me wrong, the sd stations dont look awful, and i realize that sd can only look so good on an hdtv.. they are at least as good as my old tv, tho honestly, prolly a lil better, i'm simply trying to optimize the quality..
my primary concern was gaming and it delivers there no problem. im using component for now, but have a vga in the mail (i want to see my dvd's in a respectable resolution).. my 360 doesn't have an hdmi port unfortunately..
post #10 of 10
Quote:
Originally Posted by dr1394 View Post

Just to be clear, the "device" to convert S-Video to composite is just a cable with the appropriate connectors and the S-Video Y and C signals connected together. Not much room for degradation.

Ron

I didn't realize one could do that, I thought a person would need some type of electronic box Then I agree nothing would really be degraded but I can't see how anything would be gained either. The TVs comb filter would still need to split the signal apart internally.
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